1853.) 995 
II. 1°7400 grms. gave: 
0-0345 grms. of Sulphate of baryta and Sil. acid, which contained 
0-:0300 éc Sulphate of baryta, and 
0-0045 ce Silicic acid. 
0:0814 KH Sulphate of baryta, (for SO,.) 
0-0395 IG Carbonic acid. 
0-0343 Re Water. 
0:0711 é Organic matter. 
The analyses gave the following composition : 
spec. 1. Spec. 2, Spec. 3. Spec. 4. 
Fe.QO; - . 1:777 trace trace trace. 
MnO . . trace trace trace trace. 
MgO . 0°348 0-219 0°53 1:140 
CaO. . 49°83 51-872 49-82 47-052 
CaFl . . 0-716 0-099 2°90 5:086 
BaO 2 . 0°359 — _ 1°131 
NAO Di ae ee hel sd 1.258 0:75 ° 1°572 
KO sire 1Orst7 0:239 0-23 0:276 
Si0s . 2 0°135 0-611 0-79 0-259 
SO; So Ua Noz/ 1-011 1°51 2:200 
PO; - 34°148 39-348 36°10 *32°957 
CO, . .. 4:088 3°165 2°83 2°270 
Cl i metrace trace trace trace. 
HO 6 22048 0-626 2°10 Oi: 
Org. Mat. 5682 2-538 2:66 4-086 
101-656 101-016 100-22 100-00, 
which may be considered as 
Spec. 1. Spec. 2. Spec. 3. Spec. 4. 
2 Fe, Os, 38PO; 2°821 = = > 
3 MgO, PO; . 0-770 0-403 0-98 2-099 
3 CaO, PO; . 69-685 §3°835 77°81 68:582 
2 NaO,PO; « F415 1°413 — 1-079 
BaO, SO; . . 0°547 ay ses 1.723 
NaO,SO3 . . 1:083 1°437 1-71 2°443 
KO, SOs . ~ 0-587 0-442 0-43 0-510 
CaO, SO; CHE == = 0-60 ae 
3 CaO, S103 . 0°382 1:727 2°23 0°'732 
Ca0,CO, . . 9315 7-212 6-45 5-172 
CaO ri 2a. 467 105605 1°284 2:35 6°517 
CORD IG ON 35 a WAS 0-099 2:90 5:086 
LO ike) tote es ee O4'S 0-626 2:10 197A 
Org. Matter . 5-682 2°538 2°66 4-086 
101-656 101°016 100:22 100-000 
The analyses which have already been made show a great similarity of com- 
position as far as regards the inorganic constituents of fossil and recent bones 
of mammalia, a fact which receives still farther confirmation from the above 
analyses. In some few points it will be noticed that the inorganic constitution 
of these specimens differs from that of analyses already published. This dif- 
ference may be accounted for by the effects of infiltration, by which a portion 
of the original substances may have been washed out, whilst its place was sup- 
plied by extraneous matter. All the analyses show an excess of lime, which 
* Asa small quantity of phosphoric acid was lost in its determination, the 
loss in the analysis was calculated as phosphoric acid. 
45 
