336 
m L. soós 
Fig. 4. Spermatogonium, late prophase. Bouin’s picric-formol, Heidenhain. 
Figs. 5—6. Spermatogonia, metaphase. Flemming’s chrom-osmic-acetic (wea¬ 
ker), Heidenhain. 
Fig. 7. Spermatogonium, late metaphase. Boujn’s picric-formol, Heidenhain. 
Figs. 8—9. Besting primary spermatocytes. Bouin’s picric-formol, Heidenhain. 
Figs. 10—11. Besting primary spermatocytes. Bouin’s picric-formol, Heiden¬ 
hain, preceded by anilin-blue. 
Fig. 12. Primary spermatocyte (synapsis, leptotene nucleus). Bouin’s picric- 
formol, Heidenhain. 
Fig. 13. Primary spermatocyte (synapsis, pachytene nucleus). Bouin’s picric- 
formol, Heidenhain. 
Fig. 14. Primary spermatocyte, bouquet. Bouin’s picric-formol, Heidenhain. 
PLATE VIII. 
Fig. 1. Primary spermatocyte, splitting of the chromosomes, beginning of the 
scattering of the chromosones. Bouin’s picric-formol, Heidenhain. 
Fig. 2. Primary spermatocyte, later stage of the scattering of the chromo¬ 
somes. Flemming’s weaker solution, Heidenhain. 
Fig. 3. Primary spermatocyte, still later stage of the scattering of the chro¬ 
mosomes. Bouin’s picric-formol, Heidenhain. 
Fig. 4. Primary spermatocyte, intercalated resting stage. Flemmings weaker 
solution, Heidenhain. % 
Fig. 5. Primary spermatocyte, later stage.. Flemming’s weaker solution, Hei¬ 
denhain. 
Fig. 6. Primary spermatocyte, beginning of the formation of the chromoso¬ 
mes. Flemming’s stronger solution, Heidenhain. 
Fig. 7. Primary spermatocyte, formation of the chromosomes, centrosomes 
appeared. Mayer’s picric-nitric acid, Bendas’s crystal-violet. 
Fig. 8. The same as Fig. 7., the centrosomes pass toward the poles. Flem¬ 
ming’s weaker solution, Heidenhain. 
Fig. 9. Primary spermatocyte with definitive chromosomes. Bouin’s picric- 
formol, Heidenhain. 
PLATE IX. 
Figs. 1—4. Primary spermatocytes, showing the formation of the chromo¬ 
somes. Figs. 1—2. and 4.: Bouin’s picric-formol, Heidenhain, preceded by anilin- 
blue ; Fig. 3. : Flemming’s weaker solution, Heidenhain. 
«Fig. 5. Primary spermatocyte, the nuclear membrane dissolved. Bouin’s 
picric-formol, Heidenhain. 
Figs. 6—8. Primary spermatocytes, metaphase. Bouin’s picric-formol, Hei¬ 
denhain. 
Fig. 9. Primary spermatocyte, formation of the spindle. ^Perényi’s fluid» 
Benda’s crystal-violet. 
Fig. 10. Primary spermatocyte, anaphase. Flemming’s weaker solution, Hei¬ 
denhain. 
Fig. 11. Primary spermatocyte, anaphase, two spindles. Bouin’s picric-formol, 
Heidenhain. 
