F 
; 
; 
4 
TE SS as ok Ce a = 
Chemistry and Physies. 299 
Kirchhoff. dD. Angstrom. v. d. Willigen. Kirchhoff. Dd. Angstrom. _v. d, Willigen. 
427°32 427°15 TATT v 14°43 41430 414°5 
y 426711 426°00 426°002 T 41837 41320 413°444 
8 425-41 425°05 re ea E 410°22 410°01 410°402 
6 424:98 424°95 kyue 0 40821 407-70 407-979 
ew 423°69 423°55 T 407-75 407710 Se st 
B 422°68 422°65 422-876 a 40631 4(6°30 ss 
¢ 421°80 42150 by Z 404°52 404°50 404°172 
0 420713 419°81 Sess t 40338 402°95 403°615 
t 418°92 418°70 5 ae @ 400°63 400-4 nore 
x 417-36 417:20 eens H 39689 396.80 397°146 
BE 415°70 415°40 Sein bs bg 393°53 393°30 393°872 
WwW. G. 
v. 
. On the spectroscopic observation of the rotation of the sun.— 
ZittneR and Voce. have succeeded in applying the spectroscope 
to the measurement of the velocity of the sun’s rotation. The 
first successful observations were made on the 2d of June last 
ory at Bothkamp near Kiel. The slit of the yates a 
e receding 
highly dispersive spectroscope by Schroder, consisting of five 
direct-vision prisms and five other prisms arranged in a circle, 
sec 
admitted, and Vogel considers the observations at present as 
simply demonstrating the fact of the sun’s rotation.—Pogg. An., 
9 Ww. G 
yf Cobalt.—F. 
ammonia-cobalt bases, containing, besides an elaborate history of 
the subject, some interesting new facts. By the action of the air 
u ia, besides the 
chlorides already well known, a dark- and a light-green salt are 
formed. The dark-green salt dissolves readily in water, at first 
with a greenish-blue color, which quickly passes to pure 
after some time to violet. Chlorhydric acid, with the aid of heat, 
decomposes this body with formation of chloride of purpureo- 
cobalt. The author calls this body chloride of dichro-cobalt, in 
