not yet fully borne out by experiment, the numbers 
Chemistry and Physics. 261 
0° C. From this it would follow that the resistance of the simple metals 
in the solid state to electric conduction, is nearly proportional to the abso- 
lute temperature. The author remarks that although this conclusion is 
the nu obtained being only 
proximate, it may yet be of interest and serve as an inducement to 
new investigations.— Pogg. Ann. civ, 650. 
3. On the expansion of liquids heated above their boiling points — 
‘uILoRIER found in 1835 that liquid carbonic acid between 0° and 30° 
Mey n coefficient of expansion of 0°0142, which is about four 
times greater than that of air and other gases. Drion has endeavored 
While between 1445 and 149°25 the coefficient is 0°00553 of the vol- 
ume at 144°5. The mean expansion of sulphurous acid between 0° and 
18° is 000193. Between 91° and 99%%5 the coefficient is 0-00368 of 
the volume at 91°; between 108°5 and 115%5 it is 0°00463 of the 
Volume at 108°5 ; between 116° and 122° it is 000583 of the volume 
d : tu 
48, xlvi, 1235, 
Pott the chemical effects of electric discharges——Putcxer has pub- 
te Pi 
aw 03 results which are most interesting to chemists. 
and the , $ th rrounding sid 
the nog, Mnpaenso are deposited upon the su in shee 
Pra which are composed of two simple gases (vapor of water, 
ammonia, protoxyd of nitrogen, deutoxyd of nitrogen, nitrous acid,) are 
jruediately separated into their components, and then remain un- 
of the» if me do not (as ammonia) unite with the platinum. If one 
this graduall disa the other gas remai 
UL When the oe cgi 7 of pnt and a solid simple sub- 
Pi Ce, complete decomposition by the current takes place but slowly, 
«; X¥gen going to the platinum of the negative electrode, (sulphurous 
“id, carbonic oxyd, carbonic acid). Carbonic acid at first splits instantly 
SECOND SERIEs, ‘Vex: 
