pe SONS BEC ea OED nS aT Ca Ne 
pieare as se SR Mee ae a Meeps Sia ante 
Chemistry and Physics. 399 
tion, 197°234, Andrews digested the potassium-platinum chloride 
with zinc; weighed the platinum precipitated and determined the 
chlorine in the solution. He obtained 197°88 as a mean. Sxrv- 
successive operations were used : In the first, the concentrated solu- 
were in excess. The final yield of double chlorides was analyzed 
by heating the salt. placed in a boat of porcelain, In a current of 
ro 
hyd 
& mean 19462003. After introducing corrections and reducing 
to a vacuum the mean value obtained is 194°34050; which the 
