213. Spermatocytes of first order; conjugation of the chromosomes.
214. Condensation of chromatin—spermatocytes of first order immediately before mitosis.
215. Equatorial plate of first maturation division.
216. Same, side view, showing chromosomes double.
217-218. Anaphase of same mitosis.
219. Daughter spermatocytes of second order.
220. Equatorial plate of second maturation mitosis.
221. Anaphase of same.
222. Young spermatid.
223. Equatorial plate of first polar spindle of winter egg.