Physics. . 261 
The following are the ——— results of my analyses, exe- 
cuted on a gram in each tri 
1, 2. 
Metallic iron 91°785 91°735 
i TG a ce cae kc ees 6532 7-080 
Ti 0-063 Oo 
Phosphorus 0-010=98°340 0°010 ==98'888 
The cobalt was proved by the blue color the nickel gave with the 
borax bead, chrome, as shewn by the bead of the nickel-oxyd in 
microcosmic salt, the green color being persistent in the reducing 
flame and coming out as the red color produced by nickel in the 
hot bead faded. Chlorine was searched for in a solution of 53°7 
grs. of the meteorite, but none was discovered. 
our world, are of great yimenrt tin science, and if our friends on 
ger masses of meteoric iron ote ie ‘found there. 
Boston, Aug. 13, 1863. : 
SCIENTIFIC INTELLIGENCE. 
ic PAYSIGE, 
1. On Celestial Dynamics ; by Dr. J. R. Mayer.'’—[We avail ore 
of a translation by Dr yore of vy. Mayer's memoir, now in 
nating volume, “ Heat as a mode of Motion,” has given a degree of gen- 
eral interest to this whole subjéet which it never would have 
aa not the ees of Tyndall set it forth in a manner equally simple and 
elightful.— 
x nti ahs Gitcn Tai incandescent and luminous body diminishes in 
temperature and Juminosity in the same degree as it radiates light and 
heat, and at last, provided its loss be not — from some other source 
these agencies, becomes cold and non-luminous 
For light, like sound, consists of vibrations which are communicated 
y the luminous or sounding body to a surrounding medium. It is per- 
nee clear that a body can only excite such vibrations in another sub- 
® when its own particles undergo a similar movement; for there is 
piss Sie Dynamik des Himmels, in populiirer drer Darstellung, yon Dr. J. R. 
Mayer, Stadtarat in Heilbronn, Heilbronn, 1848, ‘Translated by Dr. H #. Debus, ERS. 
published by Appleton, 12mo, pp. 480, New York, 18 
