382 Miscellanies. 
The [bi] chloride of sulphur, for example, a very deep red-brown Guid; 
the fat and essential oils; and many saline solutions strongly colored 
are much more Jitiaieaea than acids, ether, alkalies, and water. 
The chloride and carbonate of sulphur offer the easiest passage ; 
water, of all the substances subjected to experiment, is that which re- 
sists the most. The order of permeability does not change with the 
degree of heat in the radiating focus, but the differences of permea- 
a are lessened in proportion to the elevation of the heat of the 
‘The writer affirms, as he says with certainty, that the greater 
eee power of a substance, the more easily does pete — 
oric find a passage through it. 
«These experiments of Melloni are in confirmation pre extension 
of results obtained by P. Prevost, and published bye him in 18h h— 
Bie Vainio 1832. sane 
dxygenated Water—M. Thénard announces, ‘that | hb 
‘consulted by physicians, relative to the mode of preparing it in an 
easy manner, the oxygenated water which is supposed to be useful 
in the symptoms of cholera asphyxia, he has modified the common 
process so as to render it very simple. It is only necessary t to add 
to the hydrochloric acid used in dissolving the peroxide of barium, 2 
small quantity of phosphoric acid. This acid seizes the ¢ oxide of ol 
manganese, and other metallic oxides which may exist in the solt tion, 
and hinders them from decomposing the binoxide of hydrogen ibe 
When the liquor is saturated and prepared 1 in the ordinary wage 
is sufficient to add a convenient quantity of sulphate of silver, or even 
an excess of sulphate of protoxide of mercury, to agitate awhile a a 
-—Rev. Encye. Abril, 1832. 
* eos Teen thleridensof eviphur: mltT biel and Gay engi na 
a favorable report, (June 11,) on the memoir of eee 
sul 
elves. oes = ap 1 toa aw M. ein 
thanthe wed emeckdee abet sia peninahi tea 
nm oe iP 
ie Ss mie Mae 
ae eee a 
