The Repertory of arts and manufactures [afterw.] arts, manufactures and agriculture, 11. kötet |
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Gyakori szavak és kifejezések
acid alfo alſo arbor Argill becauſe bees beft beſt bottom cafe calcareous calx clay coal colour comb common falt confequently confiderable confifts contain copal cryftals cutters cylinder defcribed depofited diffolved earth endleſs experiments faid faline fame fand fcrew feems feparated feven fhall fhould fide filk firft fituation fixed air fize fkins fluid fmall foil folution fome foon fpecies fpirit fquare ftate ftill fubftance fuch fufficient fugar fulphuric fuppofe fyrup gallic acid glaſs grains heat hive inches increaſed inftead iron itſelf juice laft leaks leather lefs liquor loam machine manner manure marle method moft moſt mucilage muft muriate muriatic acid muſt neceffary nitrous acid obferved ooze pafs pipe placed plants plate pounds prefent preffed procefs proportion purpoſe quantity raiſed refpect roots ſkins ſmall ſtate thefe theſe thofe thoſe tion trees twifts ufual uſed vats veffel vegetables weight wheels white beet
Népszerű szakaszok
126. oldal - ... and let them be balanced. Then reduce a few ounces of dry marl into powder, and let this powder be carefully and gradually thrown into the flask, until, after repeated additions, no farther effervescence is perceived.
44. oldal - At ten o'clock in the morning, five brents and a half of milk, each brent being about forty-eight quarts, was put into a large copper, which turned on a crane, over a flow wood-fire, made about two feet below the furface of the ground. The milk was ftirred from time to time; and, about eleven o'clock, when juft...
412. oldal - Doffie's procefs, arofe from the evaporation of fome of its principles, and the more intimate union of the reft, in confequence of that evaporation : to verify this conjecture, I tried the following experiment. I filled a half-pint phial full of linfeed oil, corked and tied it fecurely over with a bladder : this I expofed to the heat of the fun, in fummer, during the whole day. After it had remained a few days in this fituation, the upper part of the phial was covered with drops, fimilar to thofe...
270. oldal - ... this impregnation lasts; but as soon as it is exhausted, or if the leaves be placed in water out of which this air has been expelled by boiling, they no longer afford pure air, from whence he infers, that fixed air is decomposed, its carbonic principle retained by the plant, and its pure air is expelled.
394. oldal - This manure was difcovered by Mr. Mayer, a German clergyman of uncommon merit, in the year 1768 ; it has fince been applied with fignal fuccefs, in Germany, Switzerland, France, and America. If in England it has not been fo much approved of, it muft be becaufe the calcareous principle prevails there almoft univerfally. Clayey lands are moft improved by it ; the time for fpreading...
44. oldal - It was now ftirred up, and left to ftand a fhort time, tor the whey to feparate a little from the curd. Part of the whey was then taken out, and the copper again turned over a fire fufficiently brifk to give a ftrongifh heat, but below that of boiling.
124. oldal - Other manures, or top-drefTmgs, as they are employed chiefly to promote the growth of vegetables, and not merely with a view of improving the foil, I omit. The operations ufed to improve foils are, fallows, draining, paring, and burning. Of chalk, clays, and fand, we have already treated.
115. oldal - ... this conjecture was really fulfilled, . as not one in twenty of them failed to vegetate ; when...
415. oldal - Mix a pint of fpirit of turpentine with one-eighth of fpirit of fal ammoniac ; fhake them well together ; put them to the copal; cork the glafs, and tie it over with a firing or wire, making a fmall hole through the cork. Set the glafs in a fand heat...
379. oldal - I fhall not mention ; the methods being too various, tedious, and of too little confequence : few falts occur, except gypfum, which is eafily diftinguifhed. The...