Physics. 267 
ound hha, with castor-oil between. This gives a ve prism. 
he the Fert 4 is here bent through almost art 2 we ete are about 
the limit of power, unless we can reflect back the rays over the same path. 
This instrument has grt a the following points: 
Ist. That the lines of the solar spectrum are as innumerable as th 
stars of heaven. It shows distinetly at least ten 
his chart, and an infinitude of nebulous bands rea Violet 
just on the point of being sunsineed a — out ah 
an idea I enclose a oe of D line of 
eee as seen by it. Riven gives — 
—the two broad ones and a faint central one. You notice 
— ca six others al a nebalo us ban 
two — of pore meg line so far a that I can readily distin- 
guish +515 of the intermediate space, and yet the coincidence with the 
two aan Fraunhofer evant is sti]l absolu 
3d. It shows that many of the ipeds of the — spectra are 
broad colored spaces, crossed themselves by bright lines. This is the 
case with the orange band of the strontium spec erate and with the 
ulicls of the calcium and barium spectra to a remarkable extent.— 
ical News, July 4, 1863. 
4, Spectrum of Phosphorus—Green coloration of hydrogen by phos- 
eb —Messrs. oeirenegeg Be aes Bemsrein, starting from the fact, long 
stated by Weehler (Ann. der Chem. und Pharm., xxxix, 251), that 
> artoeact acid veasmensieiaaks a beautiful green color to a hydrogen 
flame, determine that pure phosphorus, introduced into the nnn 
generation a rodu s the same effect. Dusart as a 
Spectrum.— 
sods tree wall marked ineniol gerior re color, and a fourth fainter 
‘one: ese lines, measured by Steinheil’s apparats, occupied 6:0, 6°5, 
and 7:0 mmeeniechs the fainter line appearing , two being placed 
at the sodium line. It also affords a broad ot ‘band of blue light 
to the left. of these lines — Chem. News, July 18. 
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