194 Intelligence and Miscellanies. 
a glass tube coming from the flask, upon which the finger 
was placed, and which was used as a safety tabe to prevent 
.the contents of the vial from rushing over into the flask) that 
the evolution of sulphuretted hydrogen had ceased. Floc- 
culi of silex were seen floating through the ae, thus in- 
dicating that the integrity of the substance was partially 
overcome. It was separated from the insoluble residue by the 
page and a stream of chlorine gas passed through it, to bring 
n it was supposed to contain, to the maximum of ox- 
‘davis 
2A portion | of the solution (1.) was decomposed by am 
monia. ‘The precipitate was of a deep reddish brown Silor, 
- the supernatant — remained perfectly colorless. 
The colorless liquid (2.) was evaporated to dryness in 
a Slaton capsule, over an Boohelic lamp. As it approached 
to dryness, a smart decrepitation was noticed. The residue 
was heated to redness, after which, water was boiled uponit 
for a few momen agin reo ution separa ated from the i inso- 
luble part by the filte: 
4, To a portion a of this solution LAS. ) oxalate of ammonia 
was added, which occasioned no c 
5. To another Bette was added es of silver: a pre- 
cipitate immediately made its appear 
6. Another pe mee contracted no atouidiaiens from muriate 
of platina or ohn cid. 
. A portion of the solution (3.) was now evaporated 
nearly to apnea and set aside to crystallize by spontane- 
ous evaporation. After the liquid was entirely evaporated, 
small nog crystals were seen by the aid of a magnifier. 
resi idue, (3.) not soluble in water, was treated with 
muriatic “geht in which it was immediately taken up. To 
the solution was added carbonate of p no precipitate 
made its Loa eee = after the ebullition of the hquid, 
dys a Copious one 
e Vides sitgns: by ammonia (2.) was dissolved in mu- 
‘atte acid, and to the liquid, rendered neutral by evapora- 
tion, was added a few drops of chloride of lime: no red 
flocks made their appearance 
“10. A part of the shieinet ges solution was decom- 
posed by potash in excess, and after being boiled for some 
time was separated from the eos ae To . was added 
muriate of ammonia, which occasioned no te ness. 
11. The portion of the stone (1.) whic reftassd to dis- 
solve in muriatic acid, was treated with “iouble its weight of 
