OV EXPECTORATED MATTER. Og'T' 



(rf). The fused matter (r) was boiled with three times its Cpaque ropy 

 weig-ht of distilled water, in which about one half appeared "'^"^^« 

 to dissolve. The clear liquid, decanted from the sediment 

 and evaj)orated, yielded crystals of muriate of soda with a - 

 much smaller quantity of spicula, or needle-shaped crys- 

 tals ; and saline matter which appeared under a lens not de- 

 finitely crystallized. A second boiling of the sediment, 

 with twice its quantity of water, afforded almost entirely 

 muriate of soda, A third boiling gave a few crystals of this 

 salt only, as appeared under the magnifier. A fourth boil- 

 ing, in an equal weight of water, afforded no saline matter. 



{e). The saline matters [d) amounted to forty-five grains 

 when evaporated to dryness. I collected by means of a 

 toothpick, from amongst the cubical cr}sta!s, as much as I 

 could of the spicula and uncrystallized saline matter. These 

 parts effervesced and precipitated supertartrate of potash 

 with tartaric acid, and certainly afforded no soda-tartrate of 

 potash — they also afforded a precipitate with nitro-muriate 

 of platina — being saturated with acetous acid there was still 

 a slight precipitation with muriate of baryl; for v.ithout ace- 

 tous acid, there was a most copious precipitation with this 

 reagent, but the greater part of the precipitate was dissolved 

 by acetous acid, added so as not to supersaturate it* — Oxa- 

 late of ammonia did not occasion a precipitation, — with ni- 

 trate of silver an abundant one took place — lime water pro- 

 duced only slight turbidity. The muriate of soda amount- 

 ed, in this saline mass of forty-five grains, to thirty-five 

 grains, or nearly to one grain in 450 of expectorated mat- 

 ter; th-e rest was subcarbonate cf potash amounting to one 

 grain, in about 1540 grains of expectorated matter, with 

 which was mixed a minute proportion, probably, of sulphate 

 and of phosphate of potash. 



(f). The undissolved matter {d) boiled with muriatic 

 •cid gave a turbid liquid, but on standing, nearly the whole 

 appeared to have been dissolved : a small proportion of se- 

 diment only took place in a transparent liquid, which was 

 boiled till it no longer parted with muriatic acid. — This dis- 

 solution being exsiccated grew liquid on exposure tq air; 

 and oxalate of ammonia, gradually added, produced, as I 

 decidedly ascertained, the precipitate of oxalate of lime. 



Q2 is). The 



