72 S.C. Proceedings of the Ninth [N.S., XVIII, 
The ey of acetone from acetates and acetic 
acid.— Ry M. G. Kexre, J. J. Supsorovucs and H. E. 

Watson 
Co wer cheat aan. eal have been carried out on the yields of 
acetone from m, calcium and barium acetates plas: Cie 
Barium sara acres nd to give the highest isi a I er 
of experiments the continuous production of a e from acotio acid by 
means of catalysts has been studied, the. c catalyst “used being th 
tates of magnesium, calcium, barium and mangan d pumice. Yields 
t is r cent have been 
obtained. 
The experiments were all ——— in a small iron retort heated by 
Means of nicrome resistance w 
Certain observation on a surface-tension phenomenon — 
By P. B. Ganevty and B. C. Bane 
It observed that when a —_— of an easily soluble substance was 
held vertically suspended in water in such a way that only about balf of 
the stick was under water, a well —— alse was taceas prvi _ 
o be a gen ral case with sticks and regular shaped 
solution of metal hae by acids under similar conditions showed 
the one effect though to a lesser degree. 
everse effect was “ager whe ena of iron was suspende d in 
Surface tension of soap solutions for different concentra- 
tions.—By A. L. Narayana and G. SUBRAHMANYAM. 
Accurate ocenoree se ecg tension of solutions of sodium 
oleate, and p astyl s r water analysis, are made by the 
capillarity method, and by the. bubble metho fin 
For the accurate measurement of pressure inside a bubble 
roved man sae is presi sete gene warplane other types both in 
quickness ad delicacy ve — on. 
e experiments pro , 
(t) Surface =m a soap solution is same at all concentrations 
‘tween wide limits. ye 
(it) The angle of contact between glass and the solution in air 
(zzz) = reliability of the eee method for studying the surface 
on of soap soluticn 
Molecular conductivity of potassium sete i 1 sol- 
By N. A. Yasnixk and B. R. Sos 
1. The molecular nope of potassium iodide in (a) a 7 
alcohol ; (b) acetone ; (c) pyrid Bose rit ne oa eo: furfural ; ( 
brenzaldehyde and (g) slianhicackbinb: solve ¢ investiga 
2. As aresult of the exper Hiatal: acki rh was found that :— 
(@ ) In all cases conduc ctivity in ases as w increase the di lution. ‘3 
(%#) It ee be held that the prods tative abot of a solvent is 
t parallelism to the cane consta ol 
(44) The goles between viscosity and eaaagntii , as poin 
