XV111 



INDEX OF THE ILLUSTRATIONS. 



Spiculae of bone of foetal humerus, 350 diam. - PZafe xxxm. 

 Lamina of a long bone, 500 diam. - - xxxni. 



Cancelli of long bone of foetus, 350 diam. - - xxxni. 



Section of femur of pigeon fed on madder, 220 diam. xxxm. 

 Section of epiphysis and shaft of foetal femur, 100 diam. xxxiv 

 Transverse section of primary cancelli, 350 diam. xxxiv. 



Section of cancelli more advanced, 350 diam. - xxxiv. 



Ditto of epiphysis and shaft of foetal femur, 350 diam. xxxiv. 

 Ditto of cartilaginous epiphysis of humerus, 30 diam. xxxv. 

 Ditto of same with bone, 30 diam. - 

 The same more highly magnified, 330 diam. 

 Blood-vessels and medullary cells - 

 Section of shaft of fcetal long bone, 20 diam. 

 Ditto of bone and cartilage of rib, 130 diam. 



TEETH. 



Vertical section of insisor tooth, seen with lens 

 Tubes of dentine near their termination, 670 diam. 

 A not unfrequent condition of same, 670 diam. 

 Tubes of dentine near their commencement, 670 diam 

 Oblique section of tubes of dentine, 670 diam. 

 Transverse section of ditto, 670 diam. 

 Transition of tubes into bone cells, 670 diam. 

 Dilatation of ditto into bone cells, 670 diam. 

 Section of cementum, 670 diam. - 

 Ditto of same traversed by tubes, 670 diam. 

 Ditto of same showing angular cells, 670 diam. 

 Fungus on section of dentine, 670 diam. 

 Oil-like globules on section of same, 350 diam. 

 Section of secondary dentine, 350 diam. 

 Ditto of bicuspid tooth, seen with lens only 

 Vertical section of enamel, 220 diam. 

 Enamel cells, seen lengthways, 670 diam. - 

 Cross section of cells of enamel, 670 diam. - 



FIBROUS TISSUE. 



Longitudinal section of tendon, 670 diam. - 

 Transverse section of same, 670 diam. 

 White fibrous tissue, 670 diam. 

 Mixed ditto, 670 diam. 

 Yellow fibrous tissue, 670 diam. 

 Different form of ditto, 670 diam. 

 Development of blood-vessels, 350 diam. 

 Areolar form of mixed fibrous tissue, 330 diam. 

 'Blood-vessels of pia mater, 350 diam. 



Fig. 3 



4 



5 



6 



2 



