Chapter 7 of 8 · 3993 words · ~20 min read

Part 7

══════╤═══════╤═══════╤═══════╤═══════╤═══════ NUMBER│ Right │ Left │ Left │ Right │ Left │epidid.│testis │epidid.│scrotal│scrotal │ │ │ │ sac │ sac ──────┼───────┼───────┼───────┼───────┼─────── 1│ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 2│Staph. │ │ │ │Strep. │ alb. │ │ │ │ vir. │Strep. │ │ │ │ │ vir. │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 3│ │ │ │Strep. │ │ │ │ │ vir. │ ──────┼───────┼───────┼───────┼───────┼─────── 4│Staph. │ │ │Strep. │Strep. │ alb. │ │ │ vir. │ vir. │Strep. │ │ │ │ │ hem. │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 5│ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 6│ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 7│ │ │ │ │ │ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 8│ │ │Staph. │Strep. │ │ │ │ alb. │ hem. │ │ │ │Strep. │ │ │ │ │ hem. │ │ ──────┼───────┼───────┼───────┼───────┼─────── 9│ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 10│ │ │ │ │ │ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 11│ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 12│ │ │Staph. │ │Strep. │ │ │ alb. │ │ hem. ──────┼───────┼───────┼───────┼───────┼─────── 13│ │ │ │ │ │ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 14│ │ │ │ │ │ │ │ │ │ ──────┼───────┼───────┼───────┼───────┼─────── 15│Staph. │Staph. │ │Strep. │Strep. │ alb. │ alb. │ │ vir. │ vir. ──────┼───────┼───────┼───────┼───────┼─────── 16│ │ │ │ │ ══════╧═══════╧═══════╧═══════╧═══════╧═══════

BACTERIOLOGY OF THE GENITAL TRACTS OF ABORTED FETUSES _Group IV_ ══════╤════════════╤════════════╤════════════╤════════════╤════════════ NUMBER│ Right │Left seminal│Right testis│Left testis │ Remarks │ seminal │ vesicle │ │ │ │ vesicle │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 1│Strep. vir. │ │ │Strep. vir. │Strep. vir. │ │ │ │ │ from │ │ │ │ │ heart’s │ │ │ │ │ blood. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 2│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 3│B. coli │B. coli │B. coli │B. coli │B. coli from │ │ │ │ │ all │ │ │ │ │ organs. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 4│ │ │Bact. abort.│Bact. abort.│Bact. │ │ │ │ │ abortum │ │ │ │ │ from │ │ │ │ │ spleen. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 5│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 6│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 7│Bact. abort.│ │ │Bact. abort.│Bact. │ │ │ │ │ abortum │ │ │ │ │ from liver │ │ │ │ │ and │ │ │ │ │ heart’s │ │ │ │ │ blood. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 8│Staph. alb. │Staph. alb. │ │Staph. alb. │Staph. alb. │ │ │ │ │ from │ │ │ │ │ heart’s │ │ │ │ │ blood. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 9│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 10│Bact. abort.│ │Bact. abort.│ │Bact. │ │ │ │ │ abortum │ │ │ │ │ from │ │ │ │ │ heart’s │ │ │ │ │ blood. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 11│ │ │ │ │ ══════╧════════════╧════════════╧════════════╧════════════╧════════════

BACTERIOLOGY OF THE GENITAL TRACTS OF CALVES DYING OF CALF INFECTIONS _Group V_ ══════╤════════════╤════════════╤════════════╤════════════╤════════════ NUMBER│ Right │Left seminal│Right testis│Left testis │ Remarks │ seminal │ vesicle │ │ │ │ vesicle │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 1│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 2.│B. coli │B. coli │ │ │B. coli │Staph. alb. │Staph. alb. │ │Staph. alb. │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 3│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 4│Strep. │Strep. │Strep. │ │Strep. │ viridans │ viridans │ viridans │ │ viridans │ │ │ │ │ from │ │ │ │ │ heart’s │ │ │ │ │ blood. ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 5│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 6│ │ │ │ │ ──────┼────────────┼────────────┼────────────┼────────────┼──────────── 7│ │ │ │ │ ══════╧════════════╧════════════╧════════════╧════════════╧════════════

BACTERIOLOGY OF THE GENITAL TRACTS OF MATURE INFERTILE OR STERILE BULLS _Group VI_

══════╤═════════╤═════════╤════════╤════════╤══════ NUMBER│ R.S.V. │ L.S.V. │Prostate│Cowper’s│ R. │ │ │ │ │Testis │ │ │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 1│Strep. │Staph. │ │ │Strep. │ vir. │ alb. │ │ │ hem. │Staph. │ │ │ │Staph. │ alb. │ │ │ │ alb. ──────┼─────────┼─────────┼────────┼────────┼────── 2│Strep. │Strep. │ │ │Staph. │ │ vir. │ │ │ alb. │(neutral)│Staph. │ │ │ │ │ alb. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 3│Strep. │Strep. │ │ │ │ vir. │ vir. │ │ │ │ │Staph. │ │ │ │ │ alb. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 4│ │ │ │ │Staph. │ │ │ │ │ alb. ──────┼─────────┼─────────┼────────┼────────┼────── 5│B. coli. │B. coli. │ │ │ │Staph. │Staph. │ │ │ │ alb. │ alb. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 6│ │Strep. │ │ │ │ │ vir. │ │ │ │ │Staph. │ │ │ │ │ alb. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 7│ │ │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 8│Ps. │Ps. │ │ │ │ pyocan.│ pyocan.│ │ │ │Strep. │Strep. │ │ │ │ hem. │ hem. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 9│Staph. │Staph. │Staph. │ │ │ alb. │ alb. │ alb. │ │ │ │ │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 10│ │ │ │ │Staph. │ │ │ │ │ alb. ──────┼─────────┼─────────┼────────┼────────┼────── 11│ │Staph. │ │ │Staph. │ │ alb. │ │ │ alb. │ │ │ │ │ │ │ │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 12│Staph. │Strep. │ │Staph. │ │ alb. │ vir. │ │ alb. │ ──────┼─────────┼─────────┼────────┼────────┼────── 13│Staph. │Staph. │Staph. │ │ │ alb. │ alb. │ alb. │ │ │B. coli. │B. coli. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 14│Staph. │Staph. │ │ │ │ alb. │ alb. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 15│ │Strep. │ │ │ │ │ hem. │ │ │ ──────┼─────────┼─────────┼────────┼────────┼────── 16│Staph. │Strep. │ │ │ │ alb. │ vir. │ │ │ ══════╧═════════╧═════════╧════════╧════════╧══════

══════╤═══════════╤════════╤════════╤═════════╤═══════ NUMBER│R. Epidid. │ L. │ L. │ R. │ L. │ │ Testis │Epidid. │ Scrotal │Scrotal │ │ │ │ Sac. │ Sac. ──────┼───────────┼────────┼────────┼─────────┼─────── 1│Strep. vir.│Staph. │Strep. │ │ │ │ alb. │ could │ │ │Staph. alb.│ │not │ │ │ │ │ grow. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 2│Strep. vir.│Staph. │Strep. │ │ │ │ alb. │ vir. │ │ │Staph. alb.│ │Staph. │ │ │ │ │ alb. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 3│Strep. vir.│Strep. │ │ │Strep. │ │ vir. │ │ │ vir. │Staph. alb.│ │ │ │ │ │ │ │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 4│Strep. vir.│ │ │ │Strep. │ │ │ │ │ hem. ──────┼───────────┼────────┼────────┼─────────┼─────── 5│Staph. alb.│ │B. coli.│ │ │ │ │Staph. │ │ │ │ │ alb. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 6│ │ │Strep. │ │ │ │ │ vir. │ │ │ │ │ │ │ │ │ │ │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 7│ │ │ │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 8│ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 9│Strep. vir.│Unident.│Unident.│ │Strep. │ │ │ │ │ hem. │ │rod. │rod. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 10│ │ │Staph. │ │ │ │ │ alb. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 11│Strep. hem.│ │Strep. │Strep. │ │ │ │ vir. │ │ │ │ │Staph. │(neutral)│ │ │ │ alb. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 12│Strep. vir.│ │ │ │ │ │ │ │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 13│Strep. vir.│ │ │ │ │ │ │ │ │ │ │ │ │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 14│Strep. │ │Strep. │Strep. │ │ (neutral)│ │ vir. │ vir. │ ──────┼───────────┼────────┼────────┼─────────┼─────── 15│ │ │Strep. │ │ │ │ │ hem. │ │ ──────┼───────────┼────────┼────────┼─────────┼─────── 16│ │Staph. │Strep. │ │Strep. │ │ alb. │ vir. │ │ hem. ══════╧═══════════╧════════╧════════╧═════════╧═══════

A—PATHOLOGY OF THE GENITAL TRACTS OF MATURE STERILE OR INFERTILE BULLS

═╤═══════════════╤════════╤══════════════╤══════════════ │R. Sem. Vesicle│L. Sem. │ Ductus │ R. Testis │ │Vesicle │ Deferens │ ─┼───────────────┼────────┼──────────────┼────────────── 1│Desquamation │Same as │Both │Apparently │ and │ right.│ apparently │ normal. │ degeneration │ │ normal. │ │ of lining │ │ │ │ membrane. │ │ │ │ │ │ │ │Debris and │ │ │ │ exudates in │ │ │ │ lumen. │ │ │ │ │ │ │ │ │ │ │ ─┼───────────────┼────────┼──────────────┼────────────── 2│Most vesicles │Same as │Right │Most tubules │ degenerating.│ right.│ apparently │ apparently │ │ │ normal. │ normal. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │Interstitial │ │Left shows │Some show │ cellular │ │ degeneration│ degeneration │ infiltration.│ │ of the │ of the │ │ │ lining │ seminal │ │ │ membrane. │ epithelium. │Necrosis in one│ │ │ │ large area. │ │ │ ─┼───────────────┼────────┼──────────────┼────────────── 3│Entire gland │Same as │Slight │Some tubules │ degenerated. │ right.│ desquamation│ normal. │ │ │ and │ Others show │ │ │ degeneration│ degeneration │ │ │ of mucosa of│ of the │ │ │ right │ seminal │ │ │ ductus. │ epithelium. │Coagulation │ │ │ │ necrosis of │ │ │ │ interstitial │ │ │ │ tissue. │ │ │ │ Debris and │ │ │ │ exudates in │ │ │ │ the vesicles.│ │ │ ─┼───────────────┼────────┼──────────────┼────────────── 4│Same as No. 3. │Same as │Epithelium │Much │ │ No. 3.│ entirely │ degeneration │ │ │ denuded in │ and │ │ │ both ducts. │ desquamation │ │ │ │ of the │ │ │ │ seminal │ │ │ │ epithelium. ═╧═══════════════╧════════╧══════════════╧══════════════

═╤══════════════╤═══════════════╤═══════════════ │R. Epididymis │ L. Testis │ L. Epididymis │ │ │ ─┼──────────────┼───────────────┼─────────────── 1│Acute │Apparently │Degeneration │ desquamation│ normal. │ and │ and │ │ desquamation │ degeneration│ │ in some │ in some │ │ tubules. │ tubules. │ │ │ │ │Others │ │ │ atrophied due │ │ │ to a chronic │ │ │ interstitial │ │ │ inflammation. ─┼──────────────┼───────────────┼─────────────── 2│Degeneration │Most tubules │Same as right, │ and │ becoming │ but some │ desquamation│ atrophied due│ tubules are │ of │ to a chronic │ becoming │ epithelium │ inflammation.│ atrophied due │ of the │ │ to a chronic │ tubules. │ │ inflammation. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ─┼──────────────┼───────────────┼─────────────── 3│Much of the │Same as right. │Same as right. │ epithelium │ │ │ denuded. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │Debris and │ │ │ exudates in │ │ │ the lumen. │ │ │ │ │ │ │ │ │ │ │ │ │ │ ─┼──────────────┼───────────────┼─────────────── 4│Desquamation │Same as right. │Same as right. │ of most of │ │ │ lining- │ │ │ membrane. │ │ │ │ │ │ │ │ │ │ │ ═╧══════════════╧═══════════════╧═══════════════

B—PATHOLOGY OF THE GENITAL TRACTS OF MATURE INFERTILE OR STERILE BULLS

═╤══════════════╤════════╤══════════════╤════════════ │ R. Sem. │L. Sem. │ Ductus │ R. Testis │ Vesicle │Vesicle │ Deferens │ ─┼──────────────┼────────┼──────────────┼──────────── 5│Epithelium │Same as │Both │Degeneration │ becoming │ right.│ apparently │ of many │ degenerated.│ │ normal. │ tubules. │Vesicles │ │ │ │ filled with │ │ │ │ debris and │ │ │ │ exudates. │ │ │ ─┼──────────────┼────────┼──────────────┼──────────── 6│Acutely │Same as │Slight │Degeneration │ inflamed. │ right.│ degeneration│ of mucosa │ │ │ of lining │ in some │ │ │ membrane of │ tubules. │ │ │ both. │ │ │ │ │ │ │ │ │ ─┼──────────────┼────────┼──────────────┼──────────── 7│Some │Same as │Both │Apparently │ degeneration│ right.│ apparently │ normal. │ of lining │ │ normal. │ │ membrane. │ │ │ ─┼──────────────┼────────┼──────────────┼──────────── 8│Necrosis in │Same as │Both │Apparently │ areas. │ right.│ apparently │ normal. │ │ │ normal. │ │Infiltration │ │ │ │ of │ │ │ │ interstitial│ │ │ │ tissue. │ │ │ │Degeneration │ │ │ │ of lining │ │ │ │ membrane. │ │ │ ═╧══════════════╧════════╧══════════════╧════════════

═╤════════════╤════════════╤══════════ │ R. │ L. Testis │ L. │ Epididymis │ │Epididymis ─┼────────────┼────────────┼────────── 5│All │Same as │Nearly │ epithelium│ right. │ normal. │ denuded. │ │ │Debris in │ │ │ lumen. │ │ │ │ │ │ │ │ ─┼────────────┼────────────┼────────── 6│Apparently │Degeneration│Apparently │ normal. │ in some │ normal. │ │ tubules. │ │ │ │ │ │ │ │ │No mitosis │ │ │ in some. │ ─┼────────────┼────────────┼────────── 7│Apparently │Apparently │Apparently │ normal. │ normal. │ normal. │ │ │ │ │ │ ─┼────────────┼────────────┼────────── 8│Apparently │Apparently │Apparently │ normal. │ normal. │ normal. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ═╧════════════╧════════════╧══════════

C—PATHOLOGY OF THE GENITAL TRACTS OF MATURE INFERTILE OR STERILE BULLS

══╤══════════════╤══════════╤════════════╤═══════════════ │ R. Sem. │ L. Sem. │ Ductus │ R. Testis │ Vesicle │ Vesicle │ Deferens │ ──┼──────────────┼──────────┼────────────┼─────────────── 9│Apparently │Apparently│Both │Apparently │ normal. │ normal. │ apparently│ normal. │ │ │ normal. │ ──┼──────────────┼──────────┼────────────┼─────────────── 10│Slight │Same as │Both │Apparently │ desquamation│ right. │ apparently│ normal. │ and │ │ normal. │ │ degeneration│ │ │ │ of the │ │ │ │ lining │ │ │ │ membrane. │ │ │ ──┼──────────────┼──────────┼────────────┼─────────────── 11│Apparently │Apparently│Both │Some tubules │ normal. │ normal. │ apparently│ show no │ │ │ normal. │ mitosis, │ │ │ │ others are │ │ │ │ degenerating. ──┼──────────────┼──────────┼────────────┼─────────────── 12│Degeneration │Same as │Both │Apparently │ and │ right. │ apparently│ normal. │ desquamation│ │ normal. │ │ of │ │ │ │ epithelium │ │ │ │ of some │ │ │ │ vesicles. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ══╧══════════════╧══════════╧════════════╧═══════════════

══╤══════════════╤══════════╤══════════════ │R. Epididymis │L. Testis │L. Epididymis │ │ │ ──┼──────────────┼──────────┼────────────── 9│Apparently │Apparently│Apparently │ normal. │ normal. │ normal. │ │ │ ──┼──────────────┼──────────┼────────────── 10│Degeneration │Apparently│Same as right. │ of lining │ normal. │ │ membrane. │ │ │ │ │ │ │ │ │ │ │ │ │ │ ──┼──────────────┼──────────┼────────────── 11│Degeneration │Same as │Degeneration │ and │ right. │ and │ desquamation│ │ desquamation │ of lining │ │ of lining │ membrane. │ │ membrane. ──┼──────────────┼──────────┼────────────── 12│Degeneration │Apparently│Apparently │ of │ normal. │ normal. │ epithelium │ │ │ of all │ │ │ tubules. │ │ │ │ │ │ │ │ │Debris and │ │ │ exudates in │ │ │ lumen. │ │ │Some increase │ │ │ in │ │ │ connective │ │ │ tissue. │ │ ══╧══════════════╧══════════╧══════════════

D—PATHOLOGY OF THE GENITAL TRACTS OF MATURE INFERTILE OR STERILE BULLS

══╤═══════════════╤═══════════════╤══════════════╤══════════════ │R. Sem. Vesicle│L. Sem. Vesicle│ Ductus │ R. Testis │ │ │ Deferens │ ──┼───────────────┼───────────────┼──────────────┼────────────── 13│Degeneration of│Same as right. │Slight │Apparently │ most of │ │ catarrhal │ normal. │ gland. │ │ inflammation│ │ │ │ of mucosa of│ │ │ │ both. │ │ │ │ │ │ │ │ │ │Cellular │ │ │ │ infiltration │ │ │ │ of │ │ │ │ interstitial │ │ │ │ connective │ │ │ │ tissue. │ │ │ │Debris and │ │ │ │ exudates in │ │ │ │ lumen. │ │ │ ──┼───────────────┼───────────────┼──────────────┼────────────── 14│Apparently │Apparently │Apparently │Some │ normal. │ normal. │ normal. │ degeneration │ │ │ │ of seminal │ │ │ │ epithelium │ │ │ │ of some │ │ │ │ tubules. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ──┼───────────────┼───────────────┼──────────────┼────────────── 15│Slight │Acute catarrhal│Both │Degeneration │ desquamation │ inflammation.│ apparently │ of seminal │ and │ │ normal. │ epithelium │ degeneration │ │ │ in some │ of lining │ │ │ tubules. │ membrane. │ │ │ │ │Debris and │ │ │ │ exudates in │ │ │ │ lumen. │ │ ──┼───────────────┼───────────────┼──────────────┼────────────── 16│Chronic │More acute than│Both │Degeneration │ interstitial │ right. │ apparently │ in some │ inflammation.│ │ normal. │ tubules. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │Atrophy of many│ │ │Some show poor │ tubules. │ │ │ mitosis. ══╧═══════════════╧═══════════════╧══════════════╧══════════════

══╤══════════════╤══════════╤═══════════════ │R. Epididymis │L. Testis │ L. Epididymis │ │ │ ──┼──────────────┼──────────┼─────────────── 13│Degeneration │Apparently│Same as right. │ and │ normal. │ │ desquamation│ │ │ of lining │ │ │ membrane of │ │ │ most │ │ │ tubules. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ──┼──────────────┼──────────┼─────────────── 14│Apparently │Apparently│Acute │ normal. │ normal. │ inflammation. │ │ │ │ │ │ │ │ │ │ │ │ │ │ │Some │ │ │ desquamation │ │ │ of lining │ │ │ membrane. ──┼──────────────┼──────────┼─────────────── 15│Desquamation │Apparently│Apparently │ of lining │ normal. │ normal. │ membrane. │ │ │ │ │ │ │ │ │ │ │ │Debris in │ │ │ lumen. │ │ │ │ │ ──┼──────────────┼──────────┼─────────────── 16│Apparently │Same as │Acute │ normal. │ right. │ inflammation. │ │ │ Some │ │ │ desquamation │ │ │ and │ │ │ degeneration │ │ │ of lining │ │ │ membrane. │ │ │ │ │ │ ══╧══════════════╧══════════╧═══════════════

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DESCRIPTION OF PLATES

PLATE I.

Fig. 1. Diagrammatic sketches showing the development of a spermatozoon from a spermatogonium.

Fig. 2. Diagrammatic sketch showing the minute structure of a spermatozoon. The middle piece is made comparatively thick in order to bring out the finer structures. Adapted from Ellenberger.

PLATE II.

Fig. 3. Testicle of bull, showing extensive degeneration and necrosis.

PLATE III.

Fig. 4. Inner part of wall of ductus deferens. Normal. × 230.

Fig. 5. Same, but showing extensive degeneration and exfoliation of the lining membrane. × 230.

PLATE IV.

Fig. 6. Ductus deferens, showing entire exfoliation of the lining membrane. The lumen is filled with a cellular debris. × 50.

Fig. 7. Same, showing the degeneration of the lining membrane, and debris in lumen. × 230.

PLATE V.

Fig. 8. Seminal vesicle of bull. High power section showing the normal structure of the vesicular cavities.

Fig. 9. Seminal vesicle of bull. Low power. The membrane lining the cavities is degenerated and exfoliated. The cavities are filled with cellular debris, and exudates. There is some increase in the interstitial tissue, and atrophy of some of vesicular cavities.

PLATE VI.

Fig. 10. Low power section of seminal vesicle of bull. The condition is about the same as in Fig. 9 except that it is not quite as severe.

Fig. 11. Same as Fig. 10. High power.

PLATE VII.

Fig. 12. Testicular tubule showing normal spermatogenesis. × 230.

Fig. 13. Testicular tubule showing no evidence of mitosis. × 230.

Fig. 14. Testicular tubule. The spermatogenic epithelium is beginning to degenerate and become cast off into the lumen. × 230.

Fig. 15. Testicular tubule, showing almost total exfoliation of the spermatogenic epithelium. × 230.

PLATE VIII.

Fig. 16. Testicular tubule. The seminal epithelium is entirely degenerated. The membrana propria is markedly thickened. × 230.

Fig. 17. Testicular tubule. The tubule is undergoing atrophy and degeneration. The interstitial connective tissue is much increased in amount. × 230.

Fig. 18. Same as Fig. 17, except that it is in the more advanced stages.