SSSSHjS
along the side of the capsule corresponding to the convexity of the
scalpriforra incisor of the under jaw of the Porcupine in the preparation,
now in the Physiological Series of the Hunterian Collection,
No. 375 A.
IBB
Chemical analyses(l) of the composite substances, built up by the
organising processes in the fundamental tissues of the matrix, above
described, have yielded the following results.
INCISORS OF ADULT MAN. 1 2
Dentine. Enamel.
Organic substance . 28.70 3.59 29.42 29.12
Inorganic substance . . 71.30 96.41 70.58 70.88
100.00 100.00 100.00 100.00
MOLARS OF ADULT MAN.
Dentine. Enamel.
Phosphate of lime with a trace of fluate of lime • . 66.72 89-82
Carbonate of lime . . 3.36 4.37
Phosphate of magnesia . • . 1.08 1.34
Salts • . 0.83 0.88
Chondrine (2) • . . 27.61 3.39
Fat • • . 0.40 0.20
100.00 100.00
b e r z e l i u s ’ a n a l y s i s g i v e s :
Phosphate of lime, with a trace of fluate of lime . 64.0 88.5
Carbonate of lime . 5.3 8.0
Phosphate of magnesia . . 1.0 1.5
Soda and muriate of soda . • • 1.4 —
Cartilage and other animal matter • 28.0 2.0
100.0 100.0
(1) These results are cited chiefly from Bibra’s “ Chemische Untersuchungen über die
Knochen und Zähne,” 8vo. 1844.
(2) “ Knorpelsubstanz.”
CA NINE OF A LIO N .
Phosphate of lime with a trace of fluate of lime . . 60.03 83.33
Carbonate of lime . 3.00 2.94
Phosphate of magnesia . . 4.21 3.70
Salts . . . • 0.77 0.64
Chondrine « . ' 31.57 9.39
Fat I . . 0.42 A trace.
100.00 100.00
T E E T H OF A d o l p h i n * (.Delphinus Delphis.)
Dentine. Cement.
Phosphate of lime with a trace of fluate of lime • 66.37 69.42
Carbonate of lime . 1.84 1.79
Phosphate of magnesia . 1.36 1.47
Salts . . 0.99 0.93
Chondrine . 28.62 25.73
Fat 0.82 0.66
100.00 100.00
t u s k o f e l e p h a n t .
Ivory.
Phosphate of Lime with a trace of fluate of lime 38.48
Carbonate of lime 5.63
Phosphate of Magnesia . 12.01
Salts . • « * 0.70
Chondrine 42.94
Fat 0.24
100.00
TUSK OF W ILD -B O A R .
Dentine.
Phosphate of lime with a trace of fluate of lime -, . 6 0 .0 0
Carbonate of lime . « • • ' . 2.51
Phosphate of magnesia . . • • . 6.43
Salts . . . 0.43
Chondrine . • • . 30.50
Fat . . . » » . 0.13
100.00