I". V. Greene on the composition of remains of Manmalia, 17 
in boiling water, and filtered from the insoluble fluorid of calcium. 
Finding that it always contained a small quantity of silicic acid, 
the mixture, after being weighed, was treated with hydrochloric 
acid, which left undissolved the silicic acid, the quantity of whic 
was determined and subtracted from the previous weight, thus 
leaving the exact quantity of fluorid of calcium. 
The solution from the carbonate of lime containing only mag- 
nesia and the alkalies, was evaporated to dryness to drive off the 
ammoniacal salts, and the residue dissolved in sulphurie acid, the 
excess of which was also driven off by heat. The dry mass 
was dissolved in water, and acetate of baryta added to convert 
the sulphates into acetates. he filtrate from the insoluble sul- 
phate of baryta, was now evaporated to dryness and heated in 
order to convert the acetates of baryta, magnesia, and the alka- 
lies into carbonates, which were then treated with boiling water, 
and the soluble alkaline carbonates thus separated from the insol- 
uble carbonates of magnesia and baryta. This latter mixture was 
then treated with dilute sulphuric acid, and from the filtrate, mag- 
nesia afterwards separated as phosphate of magnesia and ammonia. 
he carbonates of the alkalies were converted into and weighed 
as chlorids, and afterwards separated by bi-chlorid of platinum. 
A new portion was taken for the remaining determinations. 
This was dried at 220° until the weight became constant ; the 
loss giving the quantity of water. The anhydrous substance 
was then heated in an open crucible until all the organic matter 
was burned off, and then moistened with carbonate of ammonia, 
as it was supposed that the high heat might have driven off a 
portion of the carbonic acid. The difference of weight gave the 
quantity of organic matter. Carbonic acid was determined in 
e usual manner from the loss of weight after treating with ni- 
tric acid. The nitric acid did not dissolve a small quantity of 
silicic acid, the weight of which was ascertained and added to 
that of the portion previously extracted. From the filtrate sul- 
phuric acid was precipitated as sulphate of baryta. 
The following are the data of the analyses: 
1. Bone of Titanotherium. 
I. 19136 grammes gave: ~| IL 1:5776 grammes gave: 
10200 grs. of pyrophosphate of magne- | 0-0090 grs, of sulphate 
war oe jorpn Rares of pre acid, which con- 
hosphoric acid. tained: 
— i sitleie eid 00086 “ — sulphate - baryta, and 
40  “  sesquioxyd of iron. 00004 “ — silicic acid. 
00137. « fluorid of calcium. 00404 “ sulphate of ba for de- 
00175 « pyrophosphate of magne- termination 0 sulphuric 
sia for determ. magnesia. acid. = | 
16995 * carbonate of lime. 00645 . “ carbonic acid. 
00504 “ mixed chlorids of potassi- | 00323 “ water. 
um and sodium. 00896 “ organic matter. 
00127 * — platinum=0-0096 chlorid | 
oO 
Srconp Series, Vol. XVI, No. 46—July, 1853. 3 
