70 



LECTURE II. 



illusion produced by folds, and that connective tissue in 

 all parts formed a homogeneous mass, endowed with a 

 great tendency to the formation of folds. 



FIG. 19. 



Schwann had, in reference to the formation of con- 

 nective tissue, assumed that there originally existed spin- 

 dle-shaped cells, the caudate corpuscles (geschwanzte 

 Korperchen) (fibro-plastic corpuscles of Lebert), which 

 afterwards became so famous ; and that out of these cells 

 fasciculi of connective tissue were directly developed by 

 the splitting up of the body of the cell into distinct fi- 

 brils, whilst the nucleus remained as such (Fig. 19, -5). 

 Henle, on the other hand, thought the only conclusion 

 his observations would warrant was, that there were 

 originally no cells at all, but that nuclei only were 

 formed in the blastema at certain intervals ; whilst the 



Fig. 19. A. Bundle of common, wavy, connective tissue (intercellular substance), 

 splitting at its end into fine fibrils. 



B. Diagram of the development of connective tissue according to Schwann. a. 

 Spindle-shaped cell (caudate corpuscle, fibro-plastic corpuscle of Lebert), with nu- 

 cleus and nucleolus. b. Cleavage of the body of the cell into fibrils. 



U. Diagram of the development of connective tissue, according to Henle. a. 

 Hyaline matrix (blastema), with nucleolated nuclei regularly distributed through it. 

 b. Fibrillation of the blastema (direct formation of fibrils), and transformation of 

 the nuclei into nucleus-fibres. 



