348 ANALTSIS or GtJM AMMONIACDM. 



■which was a brown empyreumatic oil. This product emitted 

 a smell of tolatile alkali on the admixture of lime. In th& 

 retort was left a coal, weighing 7*5 gram. [115*8 grs.], 

 which after incineration left 3*2 gram. [49*4 grs.] of ashe« 

 mixed with gravel. From these weak nitric acid extracted 

 1-5 dec. [2*3 grs.] of phosphate of lime, and 3 dec. [4'G 

 grs.] of carbonate of lime. 

 Ammcinhcum § H- (^) I boiled 25 gram. [386 grs.] of powdered am- 

 b^Iejlmal- moiacum with a sufficient quantity of alcohol at 36* 

 [sp. gr. 0-837]. The Solution filtered boiling let fall 

 nothing on cooling. A white substance remained on th« 

 filter, which, after being washed with alcohol and dried, 

 weighed 5*8 gram. [89*5 grs.]. 

 fccsidimm dis- S. This substance, being heated with water, dissolved in 

 solved m water. {^ {^ great part. The solution, being strained through fine 

 linen, left a graj'ish substance, soft and as it were glutinous, 

 insoluble both in water and spirit of wine, black after it 

 was dried, and then weighing I'l gram. [17 grs.]. It 

 burned more easily than a gum, and was reduced to gray 

 ^shes. Treated with nitric acid it gave a yellow colour, 

 and afforded a little oxalic acid, 

 €um. ' C. The aqueous solution (J5) yielded on evaporation 



4*6 gram. [71 grs.] of gum. 

 Its properties. 1- This gum wa,s transparent, of a reddish yellow colour, 

 and a slightly bitter taste, somewhat brittle, and dried 

 easily in comparison with other gums. 



2. It burned without any apparent flame, leaving some 

 white ashes, which dissolved in acids with effervescence. 



3. Water dissolved it entirely ; and the solution could 

 barely be said to redden infusion of litmus. 



4. It was precipitated entirely from its solutions by the 

 snbacetate of lead ; but not at all by acetate, or the ni- 

 trate of lead or of mercury. The latter merely rendered 

 the solution milky, 



5. Lime-water in excess does not render the solution oi^ 

 this gum at all turbid, therefore it contains no phosphoric 

 acid ; yet its ashes jield a little phosphate. Hence I con, 

 ccive phosphorus exists in this gum in a state of combina- 

 nation with the other elements that compose it. 



6. Oxalate 



