122 
Original Communications, 
(in which it only completely dissolved at a boiling heat) and 
treated with oxalate of potash gave a considerable white 
precipitate of lime in combination with oxalic acid. 
Another portion of the same solution heated with sulphuric 
acid afforded a white pulverulent precipitate interspersed with 
fine needle-shaped crystals perfectly similar to those of sul- 
phate of lime. In order to determine with what acid this 
base was combined we treated a part of our solution in nitric 
acid with nitrate of barytes and obtained a strong precipitate 
of insoluble sulphate of barytes. To be quite sure that the 
powder given us for examination consists as the above ana- 
lysis already sufficiently proves, only of sulphate of lime with 
a trifling quantity of organic matter, we again treated a por- 
tion of it with distilled water, and upon adding a solution of 
nitrate of barytes we obtained a precipitate of sulphate 
of barytes, and with a solution of oxalate of potash, an ox- 
alate of lime. 
