table I. 
fig. i. 
Half the os frontis of an abortive human foetus, magnified about four times its natural 
diameter: Communicated to me by Dr. Nichols. 
A Tloe edge of the orbit of the eye. 
B Part of the orbit. 
C C Some detached offificat ions. 
F I G. II. 
The os parietale of an human foetus, in which the bony fibres feem to proceed from 
the center. 
F I G. III. 
Part of the laft bone viewed in a microfcopC. 
F I G. IIII. 
A bit of an os femoris. 
A B The ■periofleum full of blood veffels. 
FIG. V. 
A bone taken out of the middle of an human heart. 
F I G. VI. FI G. VII. 
The hand and foot of an human foetus, in which the cartilaginous parts being flirunk and 
dried, have loft their fhape. 
F I G. VIII. 
The fcapula of a foetus. 
A The acetabulum. 
B The end of the proceffus coracoides. 
C The end of the acromion. 
D A part of the bafts of proceffus coracoides. 
E E F The bafs of the fcapula: All thefe parts are cartilaginous. 
F I G. IX. 
The os innominatum. 
A A The upper edge of the il'tum. 
BB A fpace between the three bones. 
CC The edge of the os ifchium and pubis: all cartilaginous. 
D The place where the os facrum joins. 
FIG. X. 
The os femoris cut open. 
A A A A Tloe cartilaginous parts at the ends of the bone. 
B The medullary cavity. 
CCCC Tloe fpongy cells. 
*• 
