XXIX. Upper or dorsal surface of the lungs of the ox 368 XXX. Broncho-pneumonia 368 XXXI. Contagious pleuro-pneumonia 368 XXXII. Contagious pleuro-pneumonia 368 XXXIII. Foot-and-mouth disease 384 XXXIV. Tuberculosis of the lungs of cattle 416 XXXV. Tuberculosis of the liver 416 XXXVI. Tuberculosis of lymph gland and of omentum (caul) 416 XXXVII. Fig. 1.--Tuberculosis of sirloin and porterhouse cuts of beef. Fig. 2.--Tuberculosis of pleura of cow, so-called "pearly disease" 416 XXXVIII. Tuberculosis of cow's udder 416 XXXIX. Actinomycosis 450 XL. Actinomycosis of the jaw 450 XLI. Actinomycosis of the lungs 450 XLII. Section of muscle from a blackleg swelling 464 XLIII. Necrotic stomatitis (calf diphtheria) 464 XLIV. Normal spleen and spleen affected by Texas fever 504 XLV. Texas fever 504 XLVI. The cattle tick (_Margaropus annulatus_), the carrier of Texas fever 504 XLVII. The cattle tick (_Margaropus annulatus_) 504 XLVIII. Portion of a steer's hide showing the Texas fever tick (_Margaropus annulatus_) 504 XLIX. Fig. 1.--Tick-infested steer. Fig. 2.--Dipping cattle to kill ticks 504 L. Facsimile of poster comparing ticky and tick-free cattle 504 TEXT FIGURES. FIG. 1. Hornfly (_HÊmatobia serrata_) in resting position 504 2. Hornflies (_HÊmatobia serrata_) on cow horn 505 3. Buffalo gnat 506 4. Screw worm (larva of _Chrysomyia macellaria_) 506 5. Screw-worm fly (_Chrysomyia macellaria_) 507 6. The warble fly (_Hypoderma lineata_) 508 7. Short-nosed blue louse (_HÊmatopinus eurysternus_) of cattle 512 8. Long-nosed blue louse (_HÊmatopinus vituli_) of cattle 512 9. Red louse (_Trichodectes scalaris_) of cattle 513 10. Egg of short-nosed blue louse (_HÊmatopinus eurysternus_) attached to a hair 513 11. Mite which causes psoroptic scab of sheep 514