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white precipitate which, after having been washed and dried,
weighed 21. 5. This precipitate, treated with sulphuric acid,
was
altogether changed into
the sulphate of lime ; from
whence it might be concluded it was the carbonate of lime.
The same process was employed in the analysis of each
of the articles comprised in the following table. I ought to
acknowledge here that I am indebted for the details of this
procedure, and the results presented by this table, to M. Las-
saigne, my friend, and chemist to the veterinary school at
Alfort.
A TABLE,
Presenting the results obtained by the Chemical Analysis of the Human
*
Teeth, and of each one in particular

DESIGNATION Of 100 parts of each
OF THE OBJECTS SUB3IITTED TO was obtained.
ANALYSIS. Animal Phos- Carbo-
matter. phate of nate of
Lime. lime.

Teeth of a man of eighty years . . . 33 66 1
29 61 10
28 571 60.009 11.420
Teeth of a child of ) Teetli of 1st dentition 23 67 10
two years j Teeth of 2d dentition 17.5 65 175
35 51 14
29 55.5 15.5
Enamel of the teeth of a man 20 72 8
Cartilaginous matter of the teeth of an jn-
86 7 11.3 2
Pulp or ganglion of the teeth of an infant
77 23
Dental sac of an infant of one day . • • 57 37 6
Matter of thp caries of the teeth . . . . 40.5 38 215
* L. F. E. Rousseau, page 35.