Annual Report, Объемы 41-421873 |
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Стр. 78
... quartz crushes faster when there is not an over supply of water- In passing through the Cornish mines one is struck with the enormous quantity used and run to waste . Not having time at my disposal I have had no means of getting the ...
... quartz crushes faster when there is not an over supply of water- In passing through the Cornish mines one is struck with the enormous quantity used and run to waste . Not having time at my disposal I have had no means of getting the ...
Стр. 90
... quartz exceedingly fine this plan may be carried out with efficiency and economy , The machine is very portable , self- contained , and requires but little time for erection , so that it may be readily removed to any part of the mine ...
... quartz exceedingly fine this plan may be carried out with efficiency and economy , The machine is very portable , self- contained , and requires but little time for erection , so that it may be readily removed to any part of the mine ...
Стр. 91
... only raised , but a rapid whirling revolving motion is given to them , which continues after release ; the head then falling on the quartz ore or whatever it may be , pounds and r after it is once fine enough to go through the 91.
... only raised , but a rapid whirling revolving motion is given to them , which continues after release ; the head then falling on the quartz ore or whatever it may be , pounds and r after it is once fine enough to go through the 91.
Стр. 91
... quartz exceedingly fine this plan may be carried out with efficiency and economy , The machine is very portable , self- contained , and requires but little time for erection , so that it may be readily removed to any part of the mine ...
... quartz exceedingly fine this plan may be carried out with efficiency and economy , The machine is very portable , self- contained , and requires but little time for erection , so that it may be readily removed to any part of the mine ...
Стр. 91
... only raised , but a rapid whirling revolving motion is given to them , which continues after release ; the head then falling on the quartz ore or whatever it may be , pounds and grinds it like the effective action of the pestle in 91.
... only raised , but a rapid whirling revolving motion is given to them , which continues after release ; the head then falling on the quartz ore or whatever it may be , pounds and grinds it like the effective action of the pestle in 91.
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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.
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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...