InteU'is-ence and Miscellanies. -01 



•■a 



green color, and after the volatilization of the muriate of 

 ammonia by ignition, a brown powder remained, which, with 

 borax, before the blowpipe, gave an orange red color, but 

 on cooling, became almost colorless. The heat was urged 

 for some time without inducing any tinge of blue. This res- 

 idue therefore, consisted of the oxide of nickel, without con- 

 taining any trace of cobalt. 



4. A 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. 



From the foregoing trials I inferred that the meteoric iron 

 was alloyed with nickel only, and accordingly I endeavored 

 to form an estimate of the relative proportions of these met- 

 als by determining the weight of per oxide of iron, afforded 

 by a certain quantity of the compound. For this purpose 

 3 grs. of the mineral were dissolved as usual in nitro-muri- 

 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-sidphuret 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 occupying a cavity, and two other specks of the same substance, engaged 

 in the stone, all of which I had the misfortune to loose, in separating them 



Vol. XVI.— No. 1. 26 



