244 



CONNECTIVE TISSUE. 



Having ascertained the fact that red blood-corpuscles originate 

 in places where a transformation of cartilage into bone takes 

 place, I studied the development of blood-vessels in the same 



FIG. 98. FEMUR OF A NEWLY BORN PUP. TRANSITION OF THE EPIPHYSIS 



INTO THE DlAPHYSIS. No CALCIFICATION OF THE BASIS-SUBSTANCE. 



SAGITTAL SECTION. CHROMIC ACID SPECIMEN. 



C, heaps of cartilage corpuscles ; If, newly formed medullary corpuscles in a territory ; 

 M, both cartilage corpuscles and basis-substance changed into medullary tissue, with traces 

 of newly formed blood-vessels. Magnified 500 diameters. 



situation. My subjects for investigation were condyles of the 

 femur of pups and rabbits and the cartilaginous border of the 

 plate of the scapula of kittens.* 



* Translated from " Ueber die Ruck- und Neubildung von Blutgefassen 

 im Knochen und Knorpel." Wiener Mediz. Jahrb., 1873. 



