190 
George Arnold, The Nucleolus and Microchromosomes etc. 
Plate X. 
Figs. 13 & 14. Completion of the synapsis. 
Figs. 15 to 17. Late prophases, opening out of the synaptic contractiou, 
and Separation of the gemini. 
Fig. 21. Chromosomes moving up to the equatorial plane. 
Fig. 18. Metaphase. 
Figs. 22, 20 & 23. Anaphase. 
Fig. 19. Telophase. Ilere the nucleolus is just about to be enclosed in 
the new nuclear memhrane which is formed on the Separation of the two 
daughter cells. 
Fig. 24a, 5, c. On the left, three forms of gemini. On the right, the same, 
when division has just commenced. 
d’X. Nucleolus in the prophase condition. 
d'N. > » » metaphase condition. 
Plate XI. 
Fig. 25. Telophase of the Ist. meiotic division. 
Figs. 26 to 28. Short prophase of 2nd. meiotic division. 
Figs. 29 to 30. Separation of the chromosomes. 
Fig. 31. 2nd. meiotic spindle figure, showing the microchromosome m. 
Figs. 32 to 35. Anaphase and telophase of 2nd. meiotic division. 
Fig. 36. Separation of the daughter cells. 
Fig. 37 to 40. Spermatids, showing the condensation of the spindle-rest. 
