VETKIilNARY SCIENCE. 61 



Although it has not found practical application as a curative 

 agent, it furnishes us the best diagnostic agent for bovine 

 tuberculosis yet known (see page 69). 



A summary of statistics indicates that about 88 per cent 

 of tuberculous animals show the reaction fever on inocula- 

 tion, while go per cent that were declared free frcm disease 

 on account of the absence of fever did not show on autopsy 

 any signs of the disease. 



Prevention. — The stables should be light and well ven- 

 tilated. Cattle should be kept from interchange of stalls 

 or stanchions. Breed only from healthy animals. No con- 

 sumptive person should be allowed to care for stock. 



Isolate all suspected animals. Such animals should be 

 examined by a competent veterinarian, and if found to be 

 tuberculous the whole herd should be tested. Tuberculous 

 animals should be killed and the carcasses burned or buried 

 deeply and covered with quicklime. Disinfection should 

 be thorough. Remove and burn all litter. Burn sulphur 

 in the closed stable. Wash or spray all woodwork with a 

 solution of corrosive sublimate, one part, to '^ne thousand 

 parts of water. 



Corrosive sublimate is a deaaiy poison and should be 

 used with care. Whitewash with freshly slaked lime. 



III. SHEEP. 

 Scab. 



Due to parasitic mites which infest the skin. 



Symptoms. — Intense itching, small reddish pimples ap- 

 pear, rupture, and discharge a watery fluid; scabs form, the 

 wool falls out in patches. Large sores sometimes result 

 from the incessant rubbing. The pai'asite may be seen with 

 a low-power lens. 



Treatment. — Take one pound of tobacco to each five 

 gallons of water and boil until the strength is exhausted 

 from the leaves. Strain and add one pound of sulphur to 

 each five gallons. Allow each sheep to remain in the bath 

 for five minutes, working the solution into all parts of the 

 skin and breaking up the scabs. Place on a slooping rack 

 and press the liquid out of the fleece, allowing it to run back 

 into the trough. The same dip may bo used for ticks. 



