TUBERCULOSIS. 425 



inspected and passed for food, and from the hide and offal of those 

 carcasses condemned as unfit for food, should be applied as part pay- 

 ment on the indemnity for their respective owners. The payment of 

 indemnity for tuberculous animals is a good business policy and 

 would do more toward making the tuberculin test popular with cattle 

 owners than any other possible action; also, as a corollary of the 

 latter, more testing would be performed and more tuberculous cattle 

 would be discovered at the start, but the gradual suppression of the 

 disease would soon be manifest, as has been noted in Pennsylvania 

 and Denmark. Furthermore, as Stiles has mentioned, if tuberculosis 

 can be eradicated from dairy herds with but slight loss to the owner, 

 the increase in the price of milk would naturally be inhibited, and, 

 consequently, the children of poor families would be in less danger 

 of a decrease in this very important article of their diet. 



From the investigations and observations that have been men- 

 tioned, it may be safely concluded — 



1. That the tuberculin test is a wonderfully accurate method of 

 determining whether an animal is affected with tuberculosis. 



2. That by its use the animals diseased with tuberculosis may be 

 detected and removed from the herd, thereby eradicating the disease. 



3. That it has no injurious effect upon healthy cattle. 



4. That the comparatively small number of cattle which have 

 aborted, suffered in health, or fallen off in condition after the test 

 were either diseased before it was made or were affected by some 

 cause other than the tuberculin. 



SUMMaEY of directions for making the TrBERCL'LIN TEST. 



1. Stable cattle under usual conditions and among usual surround- 

 ings, feed and water in the customary manner. 



2. Make a physical examination of each animal, and give to each 

 one some designation by which the animal will be known throughout 

 the test. 



3. Take each animal's temperature at least three times at two or 

 three hour intervals on the day of injection; for instance, at 2, 5, 

 and 8 p. m. 



4. At 8 or 10 p. m. inject a dose of tuberculin under the skin in the 

 region of the shoulder, using a sterile hypodermic syringe after dis- 

 infecting the skin at the seat of injection with a 5 per cent solution 

 of carbolic acid or a similar antiseptic solution. / 



5. Tuberculin is not always concentrated to the same degree and 

 therefore the dose, which should always appear on the label, varies 

 considerabh?^. The dose of imported tuberculin is 0,25 cubic centi- 

 meter for an adult cow, and before injection is diluted with sterile 

 water to 2 cubic centimeters. The tuberculin made by the Bureau 



