1922.] Indian Science Congress. L.8.C. 73 
t by certain investigators, was not found to hold good 
strictly but certain exceptions to the above rule, were ob- 
ved. 
Study in viscosities of cobalt, copper and mercuric chlo- 
rides with a view to find the constitution of the com- 
plexions formed in the solutions. —By N. A. YasxiK and 
Ram LAL UBEROY. 
l. The viscosity of solutions of single salts at different concentra- 
tions was studied. be salts examined were the alkali chlorides and the 
chlorides of copper balt and bi ai ry. 
After the ‘investigation f the viscosity of geen? a single salts, 
— Tlacouily of the binary pare fess es of chlorides tee = obalt, copper and 
ercury with sikealt chlorides were studied in two 
e following conclusions were arrive fo 
(i) In case of solutions of single argon ne: little relationship was 
notice tween viscosity and concen ration. 
(4¢) In case of binary mixtures, uhen the ities in two differ- 
nt ratios were compared, it was found that the inne 
of the complexion in case of cobalt, copper mercuric 
chlorides, with alkali chlorides, was nearer to aes (M'!Cl,) 
—_ to M (M!Cl,). The slight dev iation may be accounted 
or by association or r hydration taking plee 
On the stability of chromates at high acetone 
M. Raman Narr and H. E. Watson 
Experiments have been carried out on the equilibrium between 
Scetbnatge trioxide and bases in presence of air at different tempera nS 
cae chromate is coe Shi: formed from lime and bepress — at 
50° but be egins to decompose at about 7 Excess of lim 
sek of formation and ince ses the amount of decomposition at higher 
temperature 
ure sodi 
temperature o wie to its fusibility, but a 2 mi I 
bonate a m trioxide in the equivalent vroportions vr : 0°65: 1 
oi a connthadiog yield of chro e in 4 hours at 660° and i 
t 1050°. Curves showing the pcre cao percentage deco co 
saition and temperatures for different mixtures 1 e been determin 
wagers oe of some Indian minerals.—By N. A. YAJNIK 
nd §. J, Kon 
1. ee mparatively nell work has been done, in India, on the ie 
tant subject of aa sansapreag vity. The radium conten nt of a great rope he . 
minerals is consequently unknown. It was, therefore, though 
to jeation in this direction. 
carry out some invextigalaan in ibe 2 CT ths eaeeat investig ation. 
three wee 
in 2. : Joly’s solution metho _ —, cal i 
e soluti , were kept at least 
Par cxspiuseee < B Bum “3 mstead Double Electroscope with a 
sake wiiacation was used. of 
3. Out of the minerals sent by the as aga egg active 
m Ochre and er 

