Chemistry and Physics. 229 
simplest acetoxim is dimethyl-acetoxim, CH,-CNOH—CH,, or 
acetoxim proper; analogous to dimet thy! -ketone or acetone, It is 
produced by the action of hydroxylamine upon in t 
cold in aqueous aointion It is easily soluble in water, alcohol 
and ether, fuses 59°— and boils at 134°8 thyl-methyl- 
acetoxim, methyl-pseudobuty!- racekaneihs meth yl- Phonshecstorio, 
and diphenyl-acetoxim are describe n the original pa 
ETRACZEK has studied the nldowtts in the same th 
He describes ethyl-aldoxim C,H,NO or CH,_CNOH—H, Ri 
aldoxim C,H,NO, and benzyl- -aldoxim C H, NO They are a 
by the bsalage > of hydroxylamine upon the respective Sees 
Ber. - Chem. Ges., xv, 2 2778, 2783, Dec., 
and pasty. After ea s was dissolved in dilute KOH, 
saturated with NH,Cl and precipitated =n a mixture of am- 
monia-silver solution an magnesia mixtur The precipitate 
after washing was decomposed wit a | sulphide, The 
filtrate was saturated with ea and concentrated. The crude 
product by solution in alkali and repregpiestion was purified. 
A yellowish pe gs powder resale which possessed all the 
pioperues of uric acid. Under the is bone the crystals were 
the right formula on we — Ber, Berl. Chen 0 xv, 2 abe 
sie G. F. 
"The Radiometer.—Much uncertainty still exists in reg ad 
to the phenomena exhibited by the radiometer. These phenomen 
are complicated by the action of the enclosing vessel, the rar feet 
medium ana the constitution of the vane of the radiometer. ERNST 
Prinesueim has made a careful study of the influence of the glass- 
containing git of the enclosed gas and of the constitution of 
vane. His apparatus consisted of one vane which was hung 
by. a long bifilar suspension. A little mirror was placed upon the 
vane, and the movements of the ated were observed by means 
of a spot of light reflected upon a scale. His experiments lead him 
to believe that a pressure Pianeta from the heated side of the 
vessel, and that this pressure increases with the t pregmben g — 
Nee ; 
ae and believes that the kinetic theory of the radiometer is the 
