412 



JOHN LEWIS BREMER 



Fig. 5 Model; testis of human embryo of 22.8 mm. (H. E. C, no. 871). A segment 

 of a transverse slice is shown; the limit of the genital ridge and the outer border 

 of the mediastinum testis are indicated by dotted lines. The proximal or periph- 

 eral ends of the cords have already lost their attachment to the peritoneum; the 

 distal or central ends are seen reaching toward the mediastinum, in one case unit- 

 ing at their tips. Except for these two sets there are no free ends, each branch 

 forming an anastomosis with others; the cut surfaces represent connections be- 

 yond the extent of the model. The arrangement of three cross connections shows 

 best at the two cut edges of the model; plates and ring formation arc also to be 

 seen. X 180 diam. 



