By 
ee 
Chemistry and Physics. 487 
e study of the composite character of the absorption 
curves give certain values of the constants used in the theoretical 
formulas. _ A portion of the paper is devoted toa reéxamination 0 
subject, and finds a eee agreem rp between nee and 
experiment. His earlier papers are contained in Wied. Ann., iv, 
p. 58, 1878; Wied. Ann., xiv, p. 523, 1881,— Wied. Ann., ao 3, 
pp. ee, 1882. 
upo 
chloride of barium, chloride strontium, chloride of calcium 
chloride of magnesium ae chloride of manganese.—Ann der 
Physik und Chemie, No. 3 2, pp. 391-412. BR 
3. Electrical Baliweenee or a Vacuum.—E. Evuvxp* reviews 
the ¢ observations 0 various experim menters upon the electrical 
finds no di iculty in explaining th nection betwe elec- 
trical disturbances on h with various pheno 
on on the sun’s surf The celestial bodies are mutually influ- 
r 
eae, spas is a necessa hen for electrical action is 
eous ; and the terms expressing conductibility therefore lose 
bivstoct i meaning. arious material bodies oppose a greater 
ec 
to the solar rays, which were concentrated upon a blackened 
Mer placed at the focus. The boiler was surrounded by a glass 
e action of t odies is passive not active.-—Ann. We 
. Physik und Chemiey No. 4, 1882, pp. 514-533. 3 
pe he engines of Mouchot and others which are? 
