A Journal of Natural Philosophy, Chemistry and the Arts, المجلد 3G. G. and J. Robinson, 1800 |
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afcertain afforded againſt alfo alkali alſo angle appears atmoſphere barytes becauſe cafe carbonate carbonic acid caufe cauſe circumftance colour compofition confequently confiderable confifts contained corundum cryftals decompofed decompofition defcribed degree diffolved diftilled diſcovered diſtance earth effect experiments expofed falt fame fecond feems feparated feven fhall fhells fhew fide filk fimilar fince firft firſt fituation fize fluid fmall foap folid folution fome foon ftate fubftance fubject fuch fufficient fugar fulphate fulphuric acid fuppofe furface fyrup gallic acid glaſs grains heat hygrometer inches increaſe inftrument iron itſelf laft laſt leaſt lefs leſs liquor meaſure metal moft moſt mucilage muriate muriatic acid muſt neceffary nitric acid nitrous obferved occafion oxide oxygen Philofophical poffible potaſh precipitate prefent produced purpoſe quantity reaſon refiftance refpect refult ſcale ſhould ſmall ſome ſpace ſtate Strontian ſubſtance ſuch tallow temperature thefe theſe thofe thoſe tube uſed veffel weight
مقاطع مشهورة
الصفحة 240 - ... while sucking. Elephants never lie down to give their young ones suck; and it often happens, when the dam is tall, that she is obliged for some time to bend her body towards her young, to enable him to reach the nipple with his mouth: consequently, if ever the trunk...
الصفحة 15 - ... time turning it round on its centre in contact with the plank, till he has, by this means, rubbed out a flat portion equal to the intended crown of the hat. In the next place he takes a block, to the crown of which he applies the flat central portion of the felt, and by forcing a...
الصفحة 212 - ... would cover such tracts of land, and hinder any vegetation. We cannot conceive that the surface of the ocean has ever been lower than it now is ; on the contrary, we are led by...
الصفحة 526 - I then placed under each a foup plate, into which I poured as much of the milk as I thought would be fufficient for one coat. Having dipped my fingers in this, I completely...
الصفحة 211 - The changes which these vegetables have suffered in their substance is almost total; they commonly retain only the external configuration of what they originally were. Such is the...
الصفحة 536 - It may eafily be conceived what an effect the extreme heat of the day, the cold of the night, the heavy dews, and the putrid fmell, muft have on weak conftitutions.
الصفحة 428 - ... of the corol, and the fpecific name from the quality of its thickened juice. So far as I can find, it does not appear that ever this vine has been taken notice of by any European till now. ' I have carefully looked over the Hortus Malabaricus, Rumphius's Herbarium Amboinenfe, &c.
الصفحة 78 - ... trough is full. It is then covered over with clay, to keep out the air ; which, if admitted, would effectually prevent the cementation. When the fire is put into the grate, the heat paffes round by means of flues, made at intervals, by the fides of the trough.
الصفحة 381 - The bottles were suspended to the balance by silver wires about two inches long, with hooks at the ends of them; and, in removing and changing the bottles, I took care not to touch the glass. I likewise avoided upon all occasions, and particularly in the cold room, coming near the balance with my breath, or touching it, or any part of the apparatus, with my naked hands. Having determined that water does not acquire or lose any weight upon being changed from a state of...
الصفحة 488 - ... does follow the motions and progresses of that menstruum till it be precipitated. Seventhly, That as there is one part that is dissoluble by the Air, so are there other parts with which the parts of the Air mixing and uniting, do make a Coagulum, or precipitation, as one may call it, which causes it to be separated from the Air, but this precipitate is so light, and in so small and rarify'd or porous clusters, that...