400 Scientific Intelligence. 
11, Similar revolving currents must be excited about the sun, 
and about every other r rotating celestial body. Such bodies, there- 
fore, may eee like the earth, electro-magnets, or the seats of a 
specific magnetis 
12, If the specific magnetism is to be measured by the intensity 
dncertained appear to "along exclusively to the first class of peri 
ca 
16. eapictian, does not seem to be, strictly speaking, a simple 
or independent force, but, like the central force of an edd ly, 
tant of revolving currents, moving with a speed which is, 
a. at least as erest as that of light at the surface of the 
os Sage bod 
y- 
17. Terrestrial and cosmical magnetism can be satisfactorily ac ae 
counted for by the hypothesis that all the magnetic eddies are 
produced by the action of gravity in the restoration of ‘distur 
equilibrium. No known force, other than gra rh 
velocity sufficient to shable it to act promptly, as ¢ 
force, in all the known cases of magnetic disturban 
Amer. Phil. Soc., Feb. 21, 1868, 
ay MINERALOGY AND GEOLOGY. 
On @ new Mineral in Cryolite ; by TaxEo. 
Bet i, | 
neal, for which I propose the name Lvigtite, from its I ity, 
was first observed in m 1866, but ove recently has been ob obtained mm 
slice Saey for examinatio: 
t oce 
ssive rye 
ated in films : and seams through ma ‘carbonate 
. BB. alon 
white slag. With he of soda fuses readily and wit 
vescence to # orenis bead. In borax dissolves readily we ane a 
ses Sm 
reaction. In microcosmic salt dissolves readily ex 
ee a eee oR ee ana ieee Sloe” peat eager egy 
e—sometimes forming a coating between crystals of ad - 
lite a 
: 
: 
hg NEBR ete ber pga: 
