416 7 Scientific Intelligence. 
SCIENTIFIC INTELLIGENCE. 
TI, PHYSICS AND CHEMISTRY. 
1. Researches on the Thermic action of the Solar Spectrum.—Miturr 
has communicated an interesting memoir upon the subject of the thennie 
action of the solar spectrum, a subject which has hitherto attracted com- 
paratively little attention. In his introduction, the author in the first 
place, briefly reviews the experiments of Melloni, who confined his atten- 
tion almost exclusively, to the determination of the position of the maxi- 
from the green to the blue is distant from the red end. The Italian phys- 
icist gave however no numerical data from which the thermic curve in the 
numbers, does not correspond to the distribution in 
spectrum, This can only be obtained by means of a prism of rock salt, 
res us to assume the identity of rays of light and heat of — 
degree of refrangibility.. The liquids employed were enclosed ey 
parallel glass plates, and optically analysed by means of a pnsm. 
