Chemistry and Physics. ; 255 
SCIENTIFIC INTELLIGENCE. 
I, CHEMISTRY AND PHYSICS. 
1. On the theory of the Bunsen flame.—The non-luminosity of 
the flame of the Bunsen gas-burner is pei eco 4 ascri a to the 
more complete combustion of the gas by the air which is mixed 
with it before it is burned. But this is an assumption aativeby un- 
roved as yet; and moreover, the positive experiments 0 NAPP 
wh 
candle burned in viialsa or at high altitudes—J. Pr. Ch., I, i, 
428, June, 288% G. _ ae 
published in the May number of this J carta seems to have been 
pas sok not only by Phisits (noticed in vol. ay, page 238,) but 
uch earlier—in December, 1864—by Tuan, and communicated 
‘6 thie Huignit an Academy at Pesth. Bosoniine wranans in the 
application to vegetable physiology of the fact Mer ammonium 
nitrite is formed when h drogen burns in an atm ere contain- 
ing nitrogen, Than sought for a method of exhibiting the result as 
a SS eriment ; for this purpose he drew the air which 
pidly. As the odor of ozone was not 4 deteinnble in this air after 
it had passed through the sig yh Ob. Than substituted a bulb-tube 
filled with water; and then on drawing through this a rapid cur- 
rent of the air from this aver of the flame, the odor of ozone was 
distinctly obtained. Were ammonium nitrite formed at the same 
time, it would be stained by the water; and this, on adding a 
