Part 8

Fig. 19. Testicular tubule. The spermatogenic epithelium has undergone a sort of hydropic degeneration. The interstitial connective tissue has become much increased in amount and has undergone cellular infiltration.

PLATE IX.

Fig. 20. Normal structure of epididymis tubule. × 140.

Fig. 21. Epididymis tubule showing exfoliation of the lining membrane, and cellular debris in the lumen. × 140.

Fig. 22. Atrophy and degeneration of epididymis tubule. The interstitial connective tissue is much increased in amount. × 140.

Fig. 23. Same, but in more advanced stage. × 140.

PLATE X.

Fig. 24. About the same as Fig. 22. × 140.

Fig. 25. Marked degeneration of epididymis tubule. There is a cellular infiltration of the interstitial tissue. × 60.

PLATE XI.

Fig. 26. Spermatozoon, showing constriction at middle of head. The head is also somewhat contorted. × 670.

Fig. 27. Spermatozoon. Pear shaped head. × 670.

Fig. 28. Spermatozoon. The head is quite long, and pointed at its posterior end. × 670.

Fig. 29. Spermatozoon, showing a constriction at middle of the head. × 670.

PLATE XII.

Fig. 30. Microcephalic spermatozoon. × 670.

Fig. 31. Spermatozoon. The head is small, and pear shaped. × 670.

Fig. 32. Macrocephalic sperm. The middle piece is much thickened. × 670.

Fig. 33. Tailless spermatozoa. × 670.

[Illustration: PLATE I]

[Illustration: PLATE II]

[Illustration: PLATE III]

[Illustration: PLATE IV]

[Illustration: PLATE V]

[Illustration: PLATE VI]

[Illustration: PLATE VII]

[Illustration: PLATE VIII]

[Illustration: PLATE IX]

[Illustration: PLATE X]

[Illustration: PLATE XI]

[Illustration: PLATE XII]

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TRANSCRIBER’S NOTES

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54 [blank] Bacteriology of the Genital Tracts of Mature Infertile or Sterile Bulls Group VI

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