j66 O^f EXPECTORATED MiTTEK. 



from any gelatinous substunccs by comparative trials with 

 muriate of <in, nitro-muriate of erold, oxiniuriate of mer- 

 cury, acetite of ceruse, and acetite of litharge. 



Sfcr. V. Agency of acetous Acid. 



Ropy opaqut j. Twentv ounces of roi)v opaque raatter, bv beinsf 

 matter treated , , , ' n t n" i ■ \ i 



•with distilled sna'^^ii ^^ith ten pints ot distilled vineii^ar, were so broken 



^iuegar. into a fibrous ov even vascular form as to exhibit an orga- 



nized appearance, the bulk being reduced to at least one 

 third of the ropy matter. By repeated agitation and long 

 digestion, the congnlated masses were broken into smaller 

 pieces, but did not apj>ear to be farther contracted in bulk, 

 or to dissolve. With some j^rcels of xnatter the vinegar 

 preserved its transparency, with others it became wheylike, 

 the matters being deposited in a curdy st«te. The muci- 

 - lagelike expectorated matter, ov this mixed with the other 

 kinds, afforded wheylike, or more or less turbid liquids with 

 vinegar. 



Liquid dist'l'ed o. ^'„j fbe decanted liquid, and the liquid obtained by 

 pressure of the sediments of the last mixture (1), being 

 distilled to ahoiu one eighth, the remainder was evaporated 

 to tlie consistence of a thick extract. The distilled liquid 

 did not appear to have received any impregnation, except 



Kxtract, what had altered a" little the odour. This extractlike resi- 



due amounted from one forty-fifth to one eightietn tbe 

 weight of the expectorated matter, according to the kind of 

 this substance. l\ varied also according to the proportion' 

 of the matter to the acid menstruum. 



Digested a 2d [h). The residue (2. a) just mentioned, after a digestion 



time, y^ second time, in the same quantity of acid, aflbrded a 



smaller quantity of extractlike raatter than before. 



a 3d, (c). The tiiird digestion aftorded still less of this sub- 



s' a nee. 



4th, 5th, [d) The fourth and (iflh digestion gave somewhat lesi 



than the immediately preceding one. 



and eih, [e). The «ixth digestion yielded nearly the same propor- 



tion of extvactlike matter as the fourth and fifth. 



Insolublt' nut- 3. The i^ndissolved matter, after these repeated digea- ^ 



*""'^V''-'''""='^- lions ia vinegar (1, 2), being exposed to fire in a platina 

 crucible, firsi flamed and part'aMy melted ; then became 



apparently 



