EXPLANATION OF THE PLATES. 



PLATE HI. 



CONNECTING TISSUE, continued. 



FIG. I. Connective fibres in wavy and parallel bundles. 

 On the right of the preparation they have been slightly teased 

 out (tendo Achillis). 



FIG. II. Longitudinal section of tendon (tendo Achillis), 

 treated by acetic acid. The fasciculi of connective fibres have 

 grown pale and disappeared. 1, Plasmatic cells in longitudinal 

 rows between the fasciculi of fibres ; 2, anastomoses between 

 them (from the fetus). 



FIG. III. Longitudinal section of tendon (Peronceus 

 longus). 1, Bundles of connective fibres ; 2, plasmatic cells. 



FIG. IV. Transverse section of the tendon of the 

 Peronseus longus. 1, Granular basis indicating the section of 

 the connective fibres; 2, irregular wavy lines marking the 

 intervals between the fasciculi ; 3, plasmatic cells. 



FIG. V. Elastic fibres from a yellow ligament. 1, The 

 fibres in their normal relation ; 2, separate fibres. 



PLATE IV. 



CONNECTING TISSUE, continued. 



FIG. I. Longitudinal section of the superior extremity 

 of the tendo Achillis (of an old man). 1, Fasciculus of con- 

 nective fibres ; 2, plasmatic cells in parallel rows. 



FIG. II. Similar section of inferior extremity of same 

 tendon. 1, Connective fibres, slightly wavy ; 2, cartilage cells 

 which have taken their origin from plasmatic cells. 



The following figures show the different modes of develop- 

 ment of connective fibres. 



FIG. III. 1, Embryonic cell; 2, same cell elongated, its 

 contents already divided into fibrilla? ; 3, two cells united at 

 their extremities, about to form a bundle of connective fibres. 



