Scientific Intelligence. 257 
and result in an augmentation of the centrifugal or expansive 
motions of the atoms, which is communicable from atom to atom 
and convertible into “modes of motion.” ‘The differences in 
the constituent parts of rays of light and veer developed by 
decomposition, polarization, &c., and due to differences in the 
std 
Ey 
a 
ia 
F 
4 
4 
* 
duration, direction, &e., of the generating vibrations, are thus 
transmitted and reproduce ed with rigorous integrity, being equal 
in duration, direction and intensity to the generating vibrations, 
and in quantity or aggregate effect, inversely proportional to 
the squares of the distances. 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY AND PHYSICS. 
a new and very powerful thermo-electric battery.—In a commu- 
Restion. to the Vienna Academy dated the 16th of March of the 
ar, S. Marcus has described a new thermo-electric battery which pos- 
Sesses sewage interest both in a aay rai practical point of 
view. The pro of the new battery are as 
(1.) The letromotive force of one of the new dake is equal to 
z's of that of a Bunsen’s element of zinc and carbon, and its internal re- 
sistance is equal to 0: 4 otk meter of normal wire. 
ts 3 Six such elements are sufficient to decompose acidulated water. 
cireuit melted. 
ok biety elements develop in an electro-magnet a lifting power of 
0 poun 
.) The a. is generated by warming only one of the gers 
Sides of the semen. and cooling the other by means of water of 
ordinary temperatur 
positive metal ti in these batteries, Marcus employs an alloy of 10 parts 
of copper, 6 of zine and 6 of nickel. The addition of one part of cobalt 
alloys a partion kind of Germ 
be used with the same negative metal ; 
of 65 parts of copper and $1 of zine, pee as as negative m 
pa | 
nical 
ae 
that only the positive metal is directly se the negative metal being 
_ Warmed by conduction ; the former melts at about 1200° C., the byes 
at about 600° C. 
2 se Scr.—Seconp Series, Vou. XL, No. 119—Serr., 1865. 
33 a 
