Intelligence and Miscellanies. 201 
portion of the precipitate by ammonia (2.) was min- 
gled with nitrate of potash and ignited. To a watery solu- 
tion of the mass was added proto nitrate of mercury, without 
occasiong any precipitate, from which the absence of chrome 
was inferred. : 
5. Another portion of the precipitate by ammonia (2.) 
was dissolved in muriatic acid, and rendered neutral by evap- 
oration. The addition of chloride of lime produced no red 
flocks indicative of the presence of manganese. _- 
ANALYSIS. 
atic acid. The solution was perfect, with the exception of 
0.05 gr. earthy matter, which remained undissolved. Am- 
monia was added, and the liquid heated for a few moments. 
The precipitate, separated, washed, dried and ignited, 
amounted to 3.96 grs. equal to 2.77 metallic iron; thus, 
leaving by deduction, 0.18 gr. nickel, in 2.95 grs. of the al- 
loy, or per hundred, 
Iron, - - - 93.90 
Nickel, - - - 6.10 
100.00 
5. Proto-sulphuret of Iron. 
This is the only remaining constituent of the Virginia ae- 
rolite, I have to describe.* Although every where dissemi- 
*I must not however, omit to mention a green capillary fibre, which I no- 
ticed oceupying a cavity, and two other fi itn the same substance, engaged 
in the stone, all of which I had the misfortune to loose, in separating them 
Vor. XVI.—No. 1. a ils ae 
