Page 103 - My FlipBook
P. 103
ENAMEL. 101
pansions of one rod come opposite to the expansions in the adjoining
rods, and do not interlock with their constrictions. This arrangement
Fic. 80.
Trails verse bccti'jii of enamel rods. (About b'
leaves alternately a greater and a less amonnt of cementing snbstance
between them.
Fig. 81.
Enamel rods in thin etched section. (About SOO X.)
AVhen observed under the microscope, the enamel rods show a char-
acteristic appearance of light and dark lines running across tliem.
Those markings are similar to the striations of voluntary muscle fibers,
