z ■--.. 



/m^ *^'/ 



Fig. 8. — A. Spcrniatogencsis. — Section of tubuie of testis, stained with hacmatoxi- 

 lin-eosin. Externally is seen Ihe thickened bascment membrane, lying on it are 

 the spermatogonia and ScrtoH cells: i, points to two nuclei. one with abundance 

 of chromatin, the othcr degenerated and showing no chromatin; 2. heads of dead 

 spermatüzoa stained red with the eosin", 3, two spermatids, lower one degenera- 

 ted chromatin stained red, upper with two purple stained heads of developing 

 spermatozoa. — B. Interstitial tissue situated between less atrophous tubules, 

 shows 4 interstitial cells around small vessel, one with nucleus divided to form 

 two young minature Leydig cells. — C. Interstitial tissue situated between more 

 atrophous tubules-more miniature interstitial cells seen with smallcr, irregular 

 polymorphic nuclei, some of which are deficient in chromatin. Oil immersion 

 I /i 2 ocular 4. Magiiijicaiioit 850. 



