PROFESSOR OWEN ON THE FOSSIL MAMMALS OF AUSTRALIA. 
573 
from this number the amount of osseine present (0295 per cent.), there remain 5 -479 per cent., the proportion 
of water present in the hone. 
“ It may be mentioned that the bone contained a considerable quantity of vivianite, which gave to portions of 
its interior a dull blue colour. 
“ Analysis of Substances filling cavity of tooth of Diprotodon [Pulp-cavity of lower incisor, 
Plate XLII. fig. 5, i. — R. 0.]. 
“ The nitrogen in a portion of the above, which had been dried for many hours at 100°, was determined by 
the usual method. 
“ 09814 gramme of substance, heated with soda-lime, gave 0-0071 gramme platinum, which corresponds 
with 0-001 gramme nitrogen. 
“ Regarding this nitrogen as present in the form of osseine, and employing the number obtained by FrJoiy 
( 17-5 per cent.) in his analysis of the gelatine of beef-hone as correctly representing the percentage of nitrogen 
in osseine, we find the substance from this fossil tooth to contain 0-58 per cent, of osseine. 
“ When heated in a tube it became slightly darker in colour, and emitted a faint empyreumatic odour. 
“ It was found to be composed of 
Much carbonate lime, 
Some phosphate lime, 
Much silica, iron oxide, &c., 
Some water not removable at 100°, 
The small portion of organic matter already mentioned. 
“ I am, dear Sir, 
“ Tour obedient Servant, 
To Professor Story-Maskelvxe, “ Walter Flight.” 
Keeper of the Mineral Department, British Museum.” 
Table of Admeasurements. 
Skull. 
Length from occipital condyle to fore end of premaxillary 
Breadth between outer sides of zygomata 
Depth to lower border of mandible at the orbit 
Depth to outlet of socket of upper to 1, at the orbit 
Breadth of occiput 
From lower border of foramen magnum to middle of superoccipital ridge . . 
Breadth of cranium at middle of temporal fossa and at the level of the 
upper part of the zygomata 
Depth of facial part anterior to the orbit 
Depth of facial part at fore end of nasals 
Depth of zygoma at the lower end of the malomaxillary suture 
Length of mandible from hack of condyle to outlet of incisive sockets .... 
Depth from summit of coracoid process 
Fore-and-aft breadth of ascending ramus 
Depth of horizontal ramus at the socket of to 1 
Length of symphysis 
Greatest depth of symphysis 
Length of upper incisive alveolar series 
Length of upper molar alveolar series 
Length of lower molar alveolar series 
Feet. Inches. Lines. 
3 0 0 
16 0 
1 10 0 
10 0 
110 
0 9 9 
0 6 6 
0 8 0 
0 10 0 
0 4 0 
2 0 0 
110 
0 7 0 
0 5 0 
0 6 0 
0 3 6 
0 4 6 
0 8 6 
0 9 0 
