Part 23 (1/2)

lead lead

tin tin

cobalt cobalt

copper copper

nickel nickel

arsenic arsenic

bismuth bismuth

mercury mercury

antimony antimony

silversilver

_Note_--All these were unknown to the ancient chemists--A

SECT XL--_Observations upon Saccholactic Acid, and its Coarbeen known in pharmacy, and which has a considerable resear canes This saccharine enated by means of nitric acid: For this purpose, several portions of nitric acid are distilled fro liquid is evaporated, and set to cristallize, by which means cristals of oxalic acid are procured; at the same time a very fine white powder precipitates, which is the saccholactic acid discovered by Scheele It is susceptible of co with the alkalies, ammoniac, the earths, and even with the metals: Its action upon the latter is hitherto but little known, except that, with them, it forms difficultly soluble salts The order of affinity in the table is taken froman

TABLE _of the Combinations of Formic Acid, with the Salifiable Bases, in the Order of Affinity_

_Bases_ _Neutral Salts_

Barytes Formiat of barytes

Potash potash

Soda soda

Linesia

Aanese anese

iron iron

lead lead

tin tin

cobalt cobalt

copper copper

nickel nickel

bisill

_Note_--All unknown to the ancient chemists--A

SECT XLI--_Observations upon Formic Acid, and its Combinations_

This acid was first obtained by distillation from ants, in the last century, by Saraff in 1749, and by Messrs Ardwisson and Ochrn of Leipsic in 1777 The fore species of red ants, _fore ant hills in woody places It is procured, either by distilling the ants with a gentle heat in a glass retort or an ale washed the ants in cold water, and dried the water, which dissolves the acid; or the acid entle expression froer than in any of the former ways To obtain it pure, we must rectify, by means of distillation, which separates it from the uncombined oily and charry , in thethe acetous acid

SECT XLII--_Observations upon Bombic Acid, and its Combinations with Acidifiable Bases[52]_

The juices of the silk wores from a larva to a chrysalis At the moment of its escape from the latter to the butterfly form, it emits a reddish liquor which reddens blue paper, and which was first attentively observed by Mr Chaussier of the Dijon acade silk worm chrysalids in alkohol, which dissolves their acid without being charged with any of the gu the alkohol, the acid remains tollerably pure The properties and affinities of this acid are not hitherto ascertained with any precision; and we have reason to believe that analogous acids may be procured from other insects The radical of this acid is probably, like that of the other acids froen, and azote, with the addition, perhaps, of phosphorus