VETERINARY SCIENCE AND PRACTICE. 187 



bility of an accurate estimate being made as to the extent or the loca- 

 tion of the disease from evidence furnished by the test, whether the 

 test is reliable in cases of advanced pregnancy, and whether tuberculin 

 has any therapeutic value in bovine tuberculosis. 



Summarizing the results, the author states his belief that the test is 

 both accurate and practical, neither injurious to the health of sound 

 nor of tuberculous cattle, given in doses of 1 cc. for each 500 or 250 lbs. 

 live weight; that where failure to react occurs after several injections 

 a cure may have been effected or the animals may simply have become 

 insusceptible to the agent and still remain infectious; that an animal 

 may remain tuberculous and still fail to react, and hence that retests 

 are of much less value; that about 70 per cent of the animals showing 

 a distinct rise of temperature of 3.5° or more within 10 hours were found 

 to have the lungs and attached glands badly affected, and that if the 

 disease was extensive or evidently of long standing, low or even no 

 reactions might be given ; that the test may be uncertain but not other- 

 wise objectionable in cases of advanced pregnancy; and finally that 

 tuberculin may have a curative effect when infection has been recent 

 or is of limited extent, and that it may aid a tendency to recover in 

 other eases. 



The author is of tlie opinion that the tuberculin test should be made 

 a condition of the granting of licenses to sell and should be made twice 

 a year. Inspection should be thorough. The laws of hygiene should 

 be observed in the manner of keeping cows, etc. All bulls that react 

 at once, all heifers under 2 years of age, all cows over 10, and all others 

 giving evidence of being badly infected should be killed. Only tested 

 bulls should be used, and calves from tuberculous mothers should be 

 reared upon milk from nontuberculous cows or upon sterilized milk. 



In a breeding experiment it was found that of 27 calves from tuber- 

 culous mothers 23 remained healthy after one or more tests, 3 became 

 tuberculous, and that one, evidently tuberculous, died soon after birth. 

 The results of similar experiments, all tending to the same conclusions, 

 are quoted. 



Relative to the subject of tuberculous attendants for cattle, the author 

 thinks the danger from this source considerably overestimated. 



Serum injections as a preventive against lung diseases in 

 horses, C. O. Jensen (38 tv Ber. K. Vet. Landbohbjskoles Lab. Landbkon. 

 Forsoy, 1897, pp. 1-36). — The author gives a number of experiments with 

 a serum-injection method for the prevention of lung diseases in horses, 

 conducted by him or under his direction, and reviews critically foreign 

 experiments in this line. The method adopted is as follows: Horses 

 that were strongly attacked and have been free from fever for 6 to 12 

 weeks are selected for bleeding. The horse is shaved and washed with 

 soap and an antiseptic fluid (lysol, water, etc.) at the place where the 

 injection is to be made. All instruments, vessels, etc., used are pre- 

 viously sterilized. The blood is gathered directly in gallon glass jars 



