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Plate 2

16 and 17 Transverse sections through the region of the seminal vesicles in a human fetus 178 mm. crown-rump length, estimated age 21 weeks (Carnegie Collection, no. 1171), being the same fetus shown in text figure 7. In figure 16 is shown the left anipulla and seminal vesicle. In ﬁgure 17 is shown the right ampulla with two distinct evaginations.

18 to 21 Transverse sections through the seminal tract in a human fetus 221 mm. crown-rump length, estimated age 25 weeks (Carnegie Collection, no. 1172). Figure 19 shows an enlarged View of the same right seminal Vesicle shown in ﬁgure 18. Figure 20 passes through the prostatic utricle and shows the opening of the left ejaculatory duct. Figure 21 is at :1 slightly lower level near the opening; of the right ejaculatory duet.

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