178 



CONNECTIVE TISSUE. 



though in the fresh condition of the cornea it is as imperceptible as are the 

 cornea corpuscles themselves. If wandering bodies exist within the normal 

 cornea, I have never met with them, such bodies will find their paths only 

 in the cement-substance, never within the lamellae. As the lamellae are con- 

 nected with each other by innumerable fine threads of living matter, which 



FIG. 69. PERIOSTEUM OF THE FEMUR OF A NEW-BORN PUP. 

 SECTION. [PUBLISHED IN 1873.] 



TRANSVERSE 



F, striated tissue of periosteum ; 8, spindle-shaped plastids in the formation of a striated 

 basis-substance; M, medullary tissue between the periosteum and the bone; O, medullary 

 corpuscles in the formation of bone-tissue; B, fully developed bone-tissue. Chromic acid 

 specimen. Magnified 800 diameters. 



penetrate the cement-substance, not taking into consideration the connect- 

 ing broad, oblique bundles of fibers, the reason why such wandering bodies 

 move in zigzag lines is readily comprehended. 



As for the finer structure of the cornea, I fully agree with C. Heitzmann's 

 views regarding the connective tissue in general. The living connection of 



