Intelligence and Miscellanies. 195 
potash, and heated to redness. for half am hour in a silver 
crucible. The mineral entered into perfect fusion, and the 
mass assumed an intense green color. By the ae of 
warm water, it was transferred to a wedgewood capsule, 
and on the addition of nitric acid, a clear yellow: ish Ediniice 
was obtaine 
12. The nitric pate (11.) was evaporated to perfect 
dryness, in, order to decompose the nitrate of iron an 
rate the silex. Warm water was added to the residue, and 
a solution of a Len color was formed, leaving behind the 
oxide of iron and s 
13. To the sallow settee (12.) was added proto-nitrate 
of mercury, which occasioned an orange colored precipi- 
tate: this when dried and heated assumed a grass green 
tinge, and communicated to. borax while in.a state of fusion 
a deep greencolor, but in cooling, it, faded to a pale yellow, 
_ The conclusions which these trials enable us to form, with 
and 4. that. of eos ba i 5, exhibits the ae al 
kali, which 6. and. 7. prove to be soda, No. 8. shows. the 
existence of magnesia; 9. and 10. the absence of manga- 
nese oe alumine: and 13. the presence of chrome. Be- 
sides the above mentioned ingredients, silex and oxide of 
iron are to. be added, whose axeiennel ina te proportion 
“Ann, de Chim. t, xx, p- 334 
a 
