= 
20, 
e 
147 
Lateral edge. 
Marks of increase or growth. 
Contraction. 
Places where the calcareous deposits from the periosteum formed in 
layers one over the other, have separated or decorticated. 
Single. | 
Double. 
Insertion. 
# & =. Section. 
ae 
p 
a 
A 
XX 
XXX 
Triangular perforated ridge. ۶ 
Muscular envelopment. 
Muscular elongation. 
Sphincter contraction. 
Perforated tubercle. 
Larger than natural size, the number of inscribed triangles points out. 
how many times magnified ; this sign is not always used, as its 
employment in one instance on a plate gives a criterion for all the 
conformable parts. 
Twisting contraction produced by muscular action. 
Undulating contraction. 
