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Part 11

Studies in Spermatogenesis (part 1 of 2) · N. M. Stevens — chapter 11 of 11 · ~74 words · public domain

231. Bouquet stage.

232. Later growth stage.

233. Prophase of first maturation mitosis, some of the chromosomes split longitudinally.

234. Later stage, chromosomes condensing and element x dividing.

235-237. First maturation mitosis.

238. Division of element x between the two maturation divisions.

239. Second maturation mitosis.

240. Anaphase of same, showing the element x more deeply stained than the chromosomes.

241. Young spermatids; element x still conspicuous.

N. M. S. del

APHIS OENOTHERA--SAGITTA BIPUNCTATA.]