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of that certainty; for as the series of propositions so concatenated all rest on the same basis, it is plain that one uniform ground of certainty runs through the whole. Here, then, however complicated the processes may be, every thing is perfectly clear and absolutely certain; and the frequent exercise of the mind in such clear and sure argumentation cannot but form a habit of clear thinking and acute reasoning.

Finally: The subservience of this study to the formation of the habit of reasoning with great agility and adroitness must, after what has been already stated, be very obvious. Many mathematical truths, far from being obvious, at first seem very strange; yet they are proved to be true, by reasonings of the nature already described, and that too so clearly and unavoidably that they cannot be even fancied to be otherwise. In this manner we often arrive at the knowledge of things which seem at first not true; but when we do arrive at them, we perceive that they are just as true, and for the same reasons as the most obvious propositions, and that it would be as absurd and contradictory to suppose that they ever could, under any circumstances, be not true, as to suppose the most obvious matters not true. Now the frequent practice in such unlooked-for reasonings leading to unexpected and strange conclusions must secure a facility and a dexterity both in apprehending the nature of the relations of ideas, and in drawing all the possible conclusions from all kinds of premises. Whatever pain and difficulty the persevering student may first experience in understanding and connecting the consecutive trains, he will ultimately acquire a quick, easy, and skiljul perception of the relations of propositions, and the deducibleness of conclusions. The habit once acquired, the premises have only to be seen, and the inference will be almost intuitively conceived.

If the study of Mathematics is pre-eminently fitted to form the habit of attention, and to improve the reasoning powers as well as memory, its subservience to the general comprehensiveness and independence of the mind scarcely needs to be pointed out. Whatever gives vigorous exercise to the mind in any department of thought must tend to enlarge, expand, and energise it generally; and when any truth is demonstrated to us, and we know the nature of the foundation on which it rests, we are certain that it is truth, though all the world should doubt. None of the objections made against this study are applicable except to the exclusive devotement of the mind to the highest branches of Mathematics for many years, if not through life. He who pursues the study, not for itself, but for its practical uses, need apprehend no evil. Let, therefore, no prejudice, arising from inapplicable objections, or from the first impressions of its being dry and tedious, deter or repel any from the study. As they advance they will become more and more interested and delighted, and will at last be rewarded with the rich improvement we have ventured to ascribe to the study of Mathematics.

REVIEW OF BOOKS.

Indications of the Creator; Extracts, bearing upon Theology, from the History and the Philosophy of the Inductive Sciences. By WM. WHEWELL, D. D., Master of Trinity College, and Professor of Moral Philosophy in the University of Cambridge. pp. 171. JOHN W. PARKER, West Strand, 1844.

As the author of one of the celebrated Bridgewater Treatises, besides several standard works on the history and philosophy of the inductive sciences, on various branches of mathematics, and on the principles of university education, Professor Whewell is so well known, beyond the walls of that university of which he is so distinguished an ornament, that any thing emanating from his pen is sure at once to command the attention of the reading public, and to be

greeted with all those marks of honour and respect which form the well-earned meed of toiling genius and successful devotion to the cause of science and of truth. The book before us consists of " Extracts, bearing upon Theology," from the professor's published works, nearly all of which have already taken a high rank in the literature of his country. To those who have formed some acquaintance with the leading principles of natural theology, these "Extracts" will be a welcome addition to the earlier labours of Paley and Brougham in the same field. To those who are yet strangers to that interesting study, and who, from ignorance of its true value and importance, have been accustomed to underrate its claims upon their attention, the work is calculated to prove even yet more serviceable. The

popular and often eloquent style in which Dr. Whewell treats of every subject brought under his consideration, the elegant scholarship, deep and varied reading, and extensive acquaintance with men and things which he everywhere displays, cannot fail to impress them favourably respecting his qualifications as an author on a matter of such wide and general scope as the natural indications of creative design, and of an intelligent "first cause of all created things," which the history and progress of science will be found to afford. And the sound principles of reasoning to which he conducts his reader in the analysis and examination of conflicting opinions, by which he is anxious to test the theories of others, and to which he throughout endeavours to conform his own determinations, appear to us so well calculated to assist in forming and maturing the youthful judgment, to aid in stimulating and developing the powers of thought, and give a healthy tone to the reflective habits, that we feel the greatest confidence in recommending this work to the attention of young men generally, as one well suited to their wants, and capable of yielding a large amount, not only of sound and salutary instruction, of pleasing and varied information, but also of pure and rational enjoyment.

The profuse variety of subjects, the extended range of thought, the splendid array of scientific research and philosophical speculation which these extracts embrace, and the interest which unavoidably attaches to many of the questions they discuss and aim to determine, contribute to render the work more attractive to a young and theorizing mind than some of the more formal treatises which have appeared on natural theology. It possesses also a great advantage over the manuals of preceding authorities, in having a more appreciable bearing on various controversial topics that are at the present time exciting a lively interest in the breasts of philosophers and men of science. As examples of this we may refer to the theory of analogies, or of a unity of plan in nature, as opposed to a diversity of purpose in creation, or, as it is sometimes termed, morphology, the question of the transmutation of species, and the hypothesis of progressive tendencies, all of which are fully elucidated and commented upon in the section on Physiology.

Another advantage is thus referred to by the author in his preface: "Perhaps also there may be some recommendation of these Indications of the Creator in their being the result of researches and reasonings undertaken with no purpose of bringing such indications into view, but with objects of quite another kind. For when an author writes with a theological conclusion set before him from the first, as that to which

he must conduct his argument, there may arise a suspicion of defect of candour and comprehensiveness in what he writes. It may be supposed that he will strain or evade any thing that points away from his predetermined end. But a narrative of the whole history of science, and an analysis of the processes by which sciences have been formed, are undertakings too large, and their course too rigidly determined by their plan, to allow them to be drawn aside by partial and irrelevant considerations. The passages now extracted as having a theological bearing will be seen, on reference, to flow naturally from the trains of thought with which they are combined in the original works."

This circumstance, however, gives rise to a peculiarity in the work which the lover of order and method will be perhaps inclined to regret, namely, that no attempt has been made to reduce these extracts into an harmonious and connected whole. They seem to stand coldly aloof from each other, like the members of an unsocial family. They certainly exhibit an unmistakeable family face; but it would require considerable acuteness of observation, or a pretty intimate acquaintanceship to be able to detect family affection. Such a want of any obvious coherence and mutual dependency in the several sections of a work we think, have a tendency to circumscribe its usefulness, and undoubtedly detracts from the pleasure, if not from the profit, experienced in its perusal.

In order, however, that our readers may be able to form some idea of the multiplicity of scientific subjects which the professor has laid under contribution, as well as of the manner in which he has arranged his materials, we shall endeavour to present a consecutive view of the contents of the volume. But, having already exceeded our accustomed limits, we must, for the present, confine ourselves to a brief notice of the commencement. The first section is on Astronomy; the subjects selected for illustration being the Copernican system, and the Nebular Hypothesis. Under the former head we have a very clever piece of writing on the character of Galileo and his judges, their age and country. The conclusion of this part contains such a just exposition of sentiments we have long entertained respecting the relations of science to Scripture, and to which we have already given expression in the pages of The Stdent, that we make no further apology for the following somewhat lengthy quotation, and with this we close the present notice: "But there remains something more to be attended to in the case of Galileo; for, though the See of Rome might exaggerate the claims of religious authority, there is a question, of no small real difficulty, which

the progress of science often brings into notice, as it did then. The revelation on which our religion is founded seems to declare, or to take for granted, opinions on points on which science also gives her decision: and we then come to this dilemma, -that doctrines, established by a scientific use of reason, may seem to contradict the declarations of revelation, according to our view of its meaning; and yet that we cannot, in consistency with our religious views, make reason a judge of the truth of revealed doctrines. In the case of astronomy, on which Galileo was called in question, the general sense of cultivated and sober-minded men has long ago drawn the distinction between religious and physical tenets which is necessary to solve this dilemma. On this point it is reasonably held, that the phrases which are employed in Scripture respecting astronomical facts are not to be made use of to guide our scientific opinions; they may be supposed to answer their end, if they fall in with common notions, and are thus effectually subservient to the moral and religious import of revelation.

But the establishment of this distinction was not accomplished without long and distressing controversies. Nor, if we wish to include all cases in which the same dilemma may again come into play, is it easy to lay down an adequate canon for the purpose. For we can hardly see beforehand what part of the past history of the universe may eventually be found to come within the domain of science, or what bearing the tenets which science establishes may have upon our view of the providential and revealed government of the world. But, without attempting here to generalize on this subject, there are two reflections which may be worth our notice. They are supported by what took place in reference to astronomy, on the occasion of which we are speaking, and may, at other periods, be applicable to other sciences.

"In the first place, the meaning which any generation puts upon the phrases of Scripture, depends, more than is at first sight supposed, upon the received philosophy of the time. Hence, while men imagine that they are contending for revelation, they are in fact contending for their own interpretation of revelation, unconsciously adapted to what they believe to be rationally probable; and the new interpretation, which the new philosophy requires, and which appears to the older school to be a fatal violence done to the authority of religion, is accepted by their successors without the dangerous results that were apprehended. When the language of Scripture, invested with its new meaning, has become familiar to men, it is found that the ideas which it calls up are quite as reconcileable as the former ones

were with the soundest religious views; and the world then looks back with surprise at the error of those who thought that the essence of revelation was involved in their own arbitrary version of some collateral circumstance. At the present day, we can hardly conceive how reasonable men should have imagined that religious reflections on the stability of the earth, and the beauty and use of the luminaries which revolve round it, would be interfered with by its being acknowledged that this rest and motion are apparent only.

"In the next place, we may observe, that those who thus adhere tenaciously to the traditionary or abitrary mode of understanding scriptural expressions of physical events are always strongly condemned by succeeding generations. They are looked upon with contempt by the world at large, who cannot enter into the obsolete difficulties with which they encumbered themselves, and with pity by the more considerate and serious, who know how much sagacity and right-mindedness are requisite for the conduct of philosophers and religious men on such occasions, but who know also how weak and vain is the attempt to get rid of the difficulty by merely denouncing the new tenets as inconsistent with religious belief, and by visiting the promulgators of them with severity such as the state of opinions and institutions may allow. The prosecutors of Galileo are still held up to the scorn and aversion of mankind; although, as we have seen, they did not act till it seemed that their position compelled them to do so, and then proceeded with all the gentleness and moderation which were compatible with judicial forms."

Report of Lectures on the Natural History of Plants yielding Food. By EDWIN LANKESTER, M.D., F.L.S., pp. 48 London: JOHN CHURCHILL, 46, Princes Street, Soho.

66

"These Lectures," the author tells us, were delivered at the Manchester Royal Institution, and reported at the time in the Manchester Guardian. They were afterwards published in The Institute."

After a few preliminary observations upon the three kingdoms of nature, Dr. Lankester introduces the subject of the vegetable secretions, which he divides into two great classes,-the medicinal and the alimentary. Under the former he ranks the alkaloids; of which he notices theine, caffeine, and the obromine, as contained in tea, coffee, and chocolate, The identity of theine and caffeine is alluded to, and also their remarkable affinity of composition to taurine, an important nitrogenous principle of the bill, resulting from the metamorphosis of the tissues, the degree of which is chiefly regulated by the production of force

Hence Liebig supposes, that, when there is a deficiency of motion, these substances may supply the place of the taurine, and thus become beneficial to health. Dr. Playfair's theory is likewise noticed, which is founded upon the similarity in composition of caffeine and nervous matter, and which supposes that the one is converted into the other without undergoing any lengthened elaboration. In this manner he accounts for the agreeable stimulus of drinking tea and coffee when the nervous system is in an exhausted condition. This effect, however, to our minds is far more satisfactorily to be attributed to the volatile oil contained in these substances.

The alimentary secretions of plants are divided into the carbonaceous and nitrogenous. The former, according to the views emanating from Giessen, are consumed by the respiratory process, and the latter, consisting of modifications of a principle termed protein, which enters largely into the composition of the animal body, are solely employed for nutrition. Those plants are first noticed which yield starch in combination with exceedingly small quantities of protein, as the potato, arrow-root, sago, tapioca, &c.; and next, those in which the starch is united to a considerable amount of nitrogenous matter, such as wheat, barley, rye, maize, rice, &c.

In the third lecture, the group of plants characterized by possessing a large quantity of oil are referred to; and the cocoa-nut, Brazil-nut, and several others of the Palmaces are especially described. The author next proceeds to those members of the vegetable kingdom, chiefly belonging to the aurantiaceæ, rosacea, and oxalidaceae, which produce acid secretions.

The fourth and last lecture is occupied with sugar and the sugar-cane, glycerine, and the liquorice-plant, and the product of the decomposition of sugar, viz. alcohol, under its various forms of fermented and distilled liquors.

Such is a brief and very imperfect notice of the subjects discussed in these excellent lectures. On all the principal plants employed by mankind as sources of food they present much valuable information, in connexion with their history, botany, and chemistry, and in their relation to dietetics. The work is a most excellent one, and we give it a hearty recommendation.

A Hebrew Primer: intended as an Introduction to the Spelling and Reading of Hebrew with the Points. Compiled for the Use of Children and Beginners. By the Rev. A. M'CAUL, D.D. Rector of St. James', Duke's Place ; and Professor of Hebrew and Rabbinical

Literature in King's College, London. London: AYLOTT and JONES, Paternoster Row.

This Primer is admirable. It "has been compiled in order to furnish a cheap book for those who wish to teach their children Hebrew, and with the hope that many may be thus induced to learn themselves. It is simply an Introduction to the Spelling and Reading of Hebrew with the Points; but it is, at the same time, so constructed that those who will take the trouble to go through it regularly must acquire a knowledge of the principal parts of the Hebrew grammar. On this plan, a very young child may from this Primer proceed at once to the translation of the Hebrew Bible." It is assumed, and we think fairly, by Dr. M'Caul, that very young children can acquire Hebrew. Nor could a child enter on a more interesting branch of study. Without asserting that it was the one unvaried language of our first parents in the garden of Eden, or that in which Jehovah made known his will to our great progenitor, certain it is that it is the most ancient language in the world. There is no trace of any one that preceded it. Besides the means for acquiring it are now numerous and easy of access. Added to these means is the Primer of Dr. M'Caul. It is simple, clear, definite, and easily understood. He commences with the alphabet, giving the character, name, pronunciation, and power of each letter. He next proceeds to the formation of syllables, including the power and application of the points; to the letters quiescent, the compound syllables, the accents; then to lessons on verbs, lessons on nouns with their suffixes; then to the verbal suffixes; and closes with a few reading lessons illustrative of the preceding rules and examples. We know of nothing so comprehensive and yet so simple.

It is well adapted to beginners, of whatever age; and we would strongly recommend some of our young men to enter on the study of this most ancient language. Once acquired, they will find passages of inimitable beauty and sublimity in the Sacred Volume. The Bible, even as a composition, is unrivalled. In the writings of the great evangelical prophet, whose soul was wrapt in seraphic fire, there are descriptions which leave the most famous of the Greek and Roman poets at an infinite distance. No one unacquainted with the originals, can con ceive of the beauties which are spread over the volume of Revelation. If for nothing else, it is worth while to study Hebrew and Greek to discover these beanties. The effort will insure a rich reward.

THE LATE-HOUR QUESTION.

METROPOLITAN INTELLIGENCE. The Committee of the Metropolitan Drapers' Association have exhibited even more than their usual activity since we last submitted to our readers an account of their proceedings. Public Meetings have been held in various parts of the metropolis, which have been attended with the best results.

Young men, who have hitherto

held aloof from the Association, seem to
have become ashamed of their former
apathy and indifference, and have come
forward to unite their efforts to the exer-
tions of those who are so manfully strug-
gling in their behalf. Many, who are
already members, are doubling and tre-
One
bling their Annual Subscriptions.
house, in the Regent-street District, espe-
cially has set a noble example in this
respect. Chelsea has not been behind-
hand in following it; and we hope to see
the same good spirit extend from one end
of London to the other. This is as it
should be. We wish to see a feeling of
noble rivalry pervading every District, and
impelling each to vie with the others in its
efforts to advance the common cause. Every
Assistant in London should feel that in
this worthy race the honour of his District
rests upon him, and that he has left a duty
unperformed until he has enrolled himself
as a member of the Association. Let him
hasten to do this, and congratulations upon
victory will soon take the place of exhor-
tations to the battle.

We will now proceed to lay before our readers summary reports of the Meetings we have referred to, in the order in which they took place, and our usual abstract of proceedings in the Central Committee.

PROCEEDINGS OF THE CENTRAL COMMITTEE
OF THE METROPOLITAN DRAPERS' ASSOCIA-
TION.

March 26th.-Resolved," That a General Public Meeting of Assistants shall be held on Monday, April 14th, in the Committee Rooms of the Association." Deputations were appointed to attend the Public Meeting in the Regent-street District on 31st of March, and that in the Strand District on March 28th. Mr. Nash was deputed to attend the Public Meeting to be held at Brighton on Friday, March 28th, with W. D. Owen, Esq.

April 2d.-The report of the Rules' Committee was read, and the Rules were read the first time.

April 9th.-A letter was read from Mr. Wheatly, Secretary to the Association of all Trades, proposing a Conference of all similar Associations.

April 16th.--Resolved, "That the Secretary do communicate with the Trades' Asso

ciation to ascertain the nature of their views."

STRAND. A Public Meeting of the Assistants of this District was held on Friday, March 28th, in the Committee Rooms of the Association, 355 Strand. The chair was taken by a member of the Central Committee, supported by a deputation from that board. Several excellent speeches were delivered; and resolutions were unanimously adopted expressive of concurrence in the measures of the Committee, and pledging the Meeting to aid by every means in their power to promote the grand object of the Association.

REGENT-STREET.-A General Meeting of the Assistants of this District was held in the school-room of the Scotch Church, Swallow-street, on Monday evening, March 31st. The chair was taken by a leading member of the District, and a deputation from the Central Committee was present to state what measures had been adopted by the governing body, and what were in contemplation.

The Chairman opened the business of the Meeting, by briefly explaining the object for which it was assembled; and then called upon the Secretary to read the report of the District Committee, which set forth in a clear and able manner the satisfactory state of feeling in the District, and the measures which had been pursued. Several excellent speeches were then delivered, and the following resolution was unanimously adopted,

"That this Meeting, being of opinion that the success of the Association mainly depends on the zeal of the Assistants, pledges itself individually to use yet more strenuous exertions to increase the number of Subscribers, and endeavour to arouse their fellow-assistants to a just appreciation of the certain advantages which must result to them, and to all, from the speedy triumph of their cause."

A vote of thanks was then unanimously accorded to the Chairman, and the Meeting, which was well attended, separated.

CITY. This District, the second in importance of the Association,-the Regentstreet standing the first, and between which and its rival a generous emulation exists as to which shall contribute most to the funds of the Association, held a General Meeting on Thursday, April 17th, in the Large Room of the Queen's-Arms Tavern, Newgate-street. One of the everactive members of the Central Committee was here also to take the chair. The Meeting, which was exceedingly well attended, many Assistants of other trades being present, was addressed in several able speeches; and resolutions were una

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