DEVELOPMENT OF CONNECTIVE-TISSUE FIBERS. 



59 



7. The mitochondria do not take part in the formation either of the fibrils 

 or of the fibers in these cultures of connective tissue. 



8. There was no evidence that the fibrils are formed by a secretory activity 

 of the grains de segregation (vacuoles) of the connective tissue. 



9. The fibrils of the epithelial cells of the amnion appeared to form in the 

 same manner as those of the subcutaneous tissue i. e., from the exoplasm of the 

 cell, and not from the fusion of the walls of the vacuoles. 



LITERATURE. 



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