inner tube had exactly the temperature of the air blown into it, itbe | 
haved precisely like the brass tube mentioned above. en the tenr 
ture of the inner tube was a few degrees lower than that of the moist 
air thrown in, the temperature of the pile diminished in a al 
degree, but reached its minimu mo’ than when the tube 
the same temperature as the air i is doubtless arosé 
102 Scientific Intelligence. 
water is deposited upon the inside of the tube throughout its whole 
ength, 
received by the pile. In a blackened tube the particles of carbon act a 
th 
ger time, Further experiments distinctly proved that a condensation of 
tube took place 
blown in was far from its point of saturation. The vapors of alcohol 
a powerful absorbent action upon radiant heat, which is not the case with 7 
r om hi tht 5 
Ty 
e , ° 
and ' ild is due simply to the effect of the condensation of water upo® 
the sides of the containing tubes, and not to any specific absorptive powe? 
in the vapor itself—Pogg. Ann., cxxx, 207. Ww. 
tts of ants: arsenic—Manrtonac has examined 
: a nsistency. This fluorid unites readily with 
alkaline fluorids to form crystalline salts, which are very soluble and more 
or less deliquescent, their sol er ‘ 
by acids, sulphuretted hydrogen caustic 
