Annual Report, Объемы 41-421873 |
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Стр. 20
... foreign coal will be able to be imported at a cheaper rate than we can produce it ourselves from excessive depths . The Commission further reports that the loss in working or winning under favorable systems is 10 per cent . , while 20.
... foreign coal will be able to be imported at a cheaper rate than we can produce it ourselves from excessive depths . The Commission further reports that the loss in working or winning under favorable systems is 10 per cent . , while 20.
Стр. 43
... produce indications of speed they are antagonistic in respect of all other forces whatsover , so that they mutually destroy each other's evil influences . Though I made experiments on the Cam in the second Magdalene eight - oar , in ...
... produce indications of speed they are antagonistic in respect of all other forces whatsover , so that they mutually destroy each other's evil influences . Though I made experiments on the Cam in the second Magdalene eight - oar , in ...
Стр. 48
... produced magnetism , magnetism attraction , and how by this attraction the various forms of telegraphic apparatus were worked . The block system in all its details was then illustrated , and the beautiful manner in which electricity ...
... produced magnetism , magnetism attraction , and how by this attraction the various forms of telegraphic apparatus were worked . The block system in all its details was then illustrated , and the beautiful manner in which electricity ...
Стр. 53
... produced a number of engraved designs upon small plates of glass . A full account of the machine will be found in the present volume . In the Afternoon , about 40 members of the Society , with their friends , visited St. Mawes Castle ...
... produced a number of engraved designs upon small plates of glass . A full account of the machine will be found in the present volume . In the Afternoon , about 40 members of the Society , with their friends , visited St. Mawes Castle ...
Стр. 54
... holes and meets at right angles with the water flowing through the annular space ; thus an active agitation of the water at the bottom of the hopper is produced , washing the ore and separating the mineral from Cox's Separator.
... holes and meets at right angles with the water flowing through the annular space ; thus an active agitation of the water at the bottom of the hopper is produced , washing the ore and separating the mineral from Cox's Separator.
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ADIT Alfred Fox apparatus Bodmin boiler Brea Hill bronze medal buddle Camborne Capt carbon Carn Brea Carn Brea Hill Chacewater coal Committee Condenser copper Cornish Cornwall Crofty crystals of felspar crystals of quartz cubic cylinder Dartmoor decomposed diameter DISTRICT ditto ditto ditto drawing elvan elvan course Exhibition Falmouth fathoms feet felspar felspathic Freeman Genn giants governor grained granite Grimspound Helston Illogan inches iron John judges killas Kynance Cove lode machine machinery Messrs mica miles miners mines Miss observations obtained patent Penryn Penzance pipe piston Plate Polytechnic porphyritic pressure prize produced pumping engine quantity quarried quartz quartzo-felspathic Redruth rock Rogers Royal sand schorl shaft shewn Society South Carn specimens speed stamps steam stone stuff surface TABLE Tregelles Truro tube valve velocity W. P. Dymond weight West Wheal Basset
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Стр. 24 - Allow me to thank you for the kind way in which you have listened to the remarks I have made, and to assure you how deeply I am with you on this occasion, both heart and soul.
Стр. 211 - Every person who shall wilfully admix, and every person who shall order any other person or persons to admix, with any article of food or drink, any injurious or poisonous ingredient or material to adulterate the same for sale...
Стр. 20 - Under what is technically called the long-wall system of working the coal, a difference of about 7° appears to exist between the temperature of the air and that of the strata at the working faces, and this difference increases 4 per cent.
Стр. 56 - ... and there we saw the giants, the sons of Anak, which come of the giants ; and we were in our own sight as grasshoppers, and so were we in their sight.
Стр. 211 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.
Стр. 181 - Photographic copies in bichromated gelatine, from delicate line engravings, have been thus faithfully reproduced on glass. In photographic pictures in gelatine, taken from nature, the lights and shadows produce films of gelatine of different degrees of thickness. A carefully regulated sand-blast will act upon the glass beneath these films more or less powerfully in proportion to the thickness of the films, and the half-tones or gradations of light and shade are thus produced on the glass. If we apply...