ON THE ASBESTUS LAMP. 
243 
bicarbonate of soda, does not produce the least effervescence, 
or any disengagement of carbonic acid, even when the 
mixture is slightly heated. 
D. — The acid from Acetic Ether. 
This was prepared with an acetic ether free from acid, the 
specific gravity of which was .876; it weighed .992; it was 
colorless; its smell is not disagreeable, nor so penetrating as that 
of the two preceding acids, it resembles that of acetic ether. It 
reddens the paper of tournsol; it remains totally colorless, 
when boiled with an equal volume of concentrated sulphuric 
acid; it did not separate the gold from a solution of chloride 
of that metal at the boiling temperature; lime water and 
acetate of lead had no action upon it. Submitted to a long 
boiling with a solution of chloride of platinum, this latter 
was not reduced; the addition of a few drops, or even an 
excess, of ammonia to this liquor, did not cause, in either case, 
the formation of the yellow precipitate of ammoniated hydro- 
chlorate of platinum, as was observed with the acid from 
nitrous ether, under similar circumstances. When boiled with 
deutoxide of mercury, there was not a trace of reduction; 
nevertheless, the filtered liquor gave, with hydrosulphate of 
ammonia, a precipitate of sulphuret of mercury. The solu- 
tion of nitrate of silver produced, in this acid, an abundant 
white cloud, and at the end of some time, a grayish white 
flocculent precipitate, which formed more promptly w 7 hen 
the liquid was heated slightly. Liquid ammonia readily 
dissolved this precipitate. This acid, boiled with a solution 
of chloride of mercury, did not cause the separation of calomel 
or of metallic mercury; the liquid remaining clear. Mixed 
with bicarbonate of soda, it did not cause any disengage- 
ment of carbonic acid, even when the mixture was slightly 
heated. 
M. Bottger thought that this small number of experiments 
gives very probably the whole difference which exists between 
the acids of the ethers; however, he proposes, for the purpose 
of obtaining in this subject a more complete certainty, to 
