Memoirs of the Literary and Philosophical Society of Manchester, Volume 2The Society, 1785 - Natural history |
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Page 96
... rays , as to produce this effect . - Ariftotle * has two problems relative to glafs the first endeavouring to explain its tranf- parency , and the other , its want of malleability . But the learned think them both to be fpurious ...
... rays , as to produce this effect . - Ariftotle * has two problems relative to glafs the first endeavouring to explain its tranf- parency , and the other , its want of malleability . But the learned think them both to be fpurious ...
Page 99
... rays of light , when held tranfverfely in the fun's rays . From the expreffion he ufes concerning it , we may think fuch inftruments were not uncommon . Pliny , however , feems to have had the most complete information concerning glafs ...
... rays of light , when held tranfverfely in the fun's rays . From the expreffion he ufes concerning it , we may think fuch inftruments were not uncommon . Pliny , however , feems to have had the most complete information concerning glafs ...
Page 102
... rays of light , fo as to produce flame in any combuftible fubftance , upon which the focus fell , and relates , that fome furgeons in his time made ufe of it , as a cauftic for ulcers and wounds . He was alfo acquainted with the ...
... rays of light , fo as to produce flame in any combuftible fubftance , upon which the focus fell , and relates , that fome furgeons in his time made ufe of it , as a cauftic for ulcers and wounds . He was alfo acquainted with the ...
Page 103
... rays , collected by a polished , concave metalline fpeculum . Aulus Gellius † quotes fome verfes of Laberius , a contemporary of Julius Cæfar , which mention a metalline burning fpeculum being conftructed . by Democritus of Abdera , a ...
... rays , collected by a polished , concave metalline fpeculum . Aulus Gellius † quotes fome verfes of Laberius , a contemporary of Julius Cæfar , which mention a metalline burning fpeculum being conftructed . by Democritus of Abdera , a ...
Page 105
... rays , was likewise known to Pliny . & c . ‡ Aulus Gellius mentions feveral properties of fpecula , which fhew the nature and construction of them to be well understood in his time , fuch as the non - inverfion of objects , the ...
... rays , was likewise known to Pliny . & c . ‡ Aulus Gellius mentions feveral properties of fpecula , which fhew the nature and construction of them to be well understood in his time , fuch as the non - inverfion of objects , the ...
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Common terms and phrases
acid alfo alkali alſo animal appears arife atmoſphere becauſe Black bodies cafe calcined caufe cauſe circumftances colouring matter colouring particles confequence confiderable confift conftitution copper courſe denfity diffolved earth eſtabliſhed experiments faid falt fame fays fcience feems fenfe feparated fermentation feven feveral fhall fhew fhould filver fimilar firſt fixed air fluids fmall fociety folid folution fome fpirit ftate ftill fubftances fubject fuch fuffer fufficient fuperior fuppofed fupport furface glafs glaſs himſelf increaſe inflammable inftances inftrument itſelf lefs light liquor maffes metallic moft moſt muft muſt nature neceffary nitre nitrous acid obfervations occafion opake orange colour Orichalcum paffage paffing pellucid perfons phænomena philofopher phlogifton phlogiſtic plants Pliny prefent principle puniſhment purpoſe quantity reafon refembling reflected refrangible rays ſeems ſhall Sir Ifaac Newton Spirit of Wine ſtate thefe theſe thofe thoſe tion tranfmitted Tranſparent uſe veffels vegetables whofe yellow
Popular passages
Page 331 - So it is in contemplation; if a man will begin with certainties, he shall end in doubts; but if he will be content to begin with doubts, he shall end in certainties.
Page 355 - During several of the summer months of the year 1783, when the effects of the sun's rays to heat the earth in these northern regions should have been the greatest, there existed a constant fog over all Europe and great part of North America. This fog was of a permanent nature ; it was dry, and the rays of the sun seemed to have little effect towards dissipating it, as they easily do a moist fog arising from water.
Page 323 - Heraclitus gave a just censure, saying, Men sought truth in their own little worlds, and not in 'the great and common world...
Page 356 - ... whose smoke might be attracted and retained by our earth; or whether it was the vast quantity of smoke, long continuing to issue during the summer from Hecla, in Iceland, and that other volcano which arose out of the sea near that island, which smoke might be spread by various winds over the northern part of the world, is yet uncertain.
Page 334 - And although the arguing from experiments and observations by Induction be no demonstration of general conclusions, yet it is the best way of arguing which the nature of things admits of, and may be looked upon as so much the stronger by how much the Induction is more general.
Page 475 - ... after, he could not help looking upon it with loathing instead of desire ; and it was not till after four days, that his stomach was brought to its natural tone, when the violence of his appetite returned, with a sort of canine eagerness.
Page 118 - But one the lofty follower of the sun, Sad when he sets, shuts up her yellow leaves, Drooping all night; and, when he warm returns, Points her enamour'd bosom to his ray.
Page 253 - Experiments on ferments and fermentation, by which a mode of exciting fermentation in malt liquors, without the aid of yeast, is pointed out, with an attempt to form a new theory of that process. Vol. 2, p. 273. Read April 20, 1785.
Page 365 - Paris was enlarged, the suburbs were insensibly built on the ancient quarries, so that, all that you see without is essentially wanting in the earth, for the foundation of the city : hence proceed the frightful cavities, which are at this time found under the houses in several quarters. They stand upon abysses. It would not require a very violent shock to throw back the stones to the place from whence they have been raised with so much difficulty. Eight men being swallowed up in a gulph one...
Page 141 - ... fo that the light reflected " from the tinging particles may predominate. " In fuch cafes, the colour of the reflected light " will be apt to vary from that of the light