1094 EXPERIMENT STATION RECORD. 



from ticks until they recover from inoculation fever. This may be accomplished ])y 

 confining the animals in a small pasture in which it is known that the ticks are 

 exterminated. The best time of the year for importing Northern cattle is between 

 November and March, for the reason that the inoculation fever is less severe during 

 cool weather. The most suitable subjects for inoculation are young cattle from 10 to 

 16 months of age. Sucking calves sometimes endure several inoculations without 

 serious results, but weaned calves from 4 to 6 months of age (jften develop serious 

 symptoms during inoculation fever and lose flesh and strength to an excessive degree. 

 The practice of the author is to vaccinate cattle for blackleg inunediately on arrival; 

 about 2 days later they are inoculated for Texas fever. The ))lood f(jr this jiurpose 

 is usually taken from a 2-year-old immune animal carrying a reasonalile number of 

 ticks. The first injection of blood should be small — from i to 2 c-c, or 1 cc. as a 

 ■standard size. During the period of inoculation fever the animals should be well- 

 fed on a nutritious diet. The inoculation fever appears after from '8 to 10 days and 

 persists for from 4 to 8 days. The fever usually terminates about 20 days after 

 inoculation. At this time the temperature may fall rapidly and may become sub- 

 normal. Deaths frequently occur at this period if animals are neglected. When the 

 temperature falls too low stimulants should be administered. A secondary period of 

 fever may begin aliout 30 days after inoculation, and persist for 8 to 10 days. It is 

 similar to the first and in calves may be as severe as the primary fever. A third 

 period of fever may appear in from 37 to 46 days. Recovery usually takes place 

 about 60 days after inoculation and animals should not be allowed to become infested 

 with ticks before that time. If the inoculation fever is severe a second dose will not 

 be necessary; the animals may simply be subjected to gradual infestation with ticks. 

 Where second inoculation is resorted to it shoukl be made about 67 days after the 

 first inoculation, and the size of dose should be about 1 cc. During 2 years 1,251 

 animals have been inoculated at the Texas Station, and of this number 116, or 9.21 

 per cent, died. This may be accepted as a fairly approximate estimate of the death 

 rate. The greater part of the bulletin is occupied with a detailed history of the 

 inoculation fever in various animals upon which experiments were made. 



Xiive stock sanitary service {Missouri Slate Bel. Agr. Rjit. 1900, pp. 24-30). r--^- 

 brief account of the State veterinary law with reference to quarantine and control 

 of contagious diseases of live stock. Especial attention is given to immunization of 

 cattle against Texas fever, and to control of tuberculosis among cattle. 



Immunizing' pure-bred cattle against Texas fever for the Southern trade, 

 J. W. CoNNAWAY {MiMoiiri state BiL Agr. Rpf. 1900, ]>p. ■?.%5-262).—Thv author gives 

 a general account of the experiments in progress at the Missouri station in the 

 improvement of practical methods for imnuinizing cattle against this disease^. 



Missouri quarantine proclamations [Missouri Stnte Bd. Agr. Ilpt. 1900, pp. 

 ■371-3S0). — A statement of the regulations adopted in the State with reference to the 

 control of Texas fever and tuljerculosis. 



The relation of bovine tuberculosis to that of man and its significance in 

 the dairy herd, H. W\ Conn {Connecticut Storrs Sta. Bui. 23, jip. 1-8). — This article 

 contains a general discussion of the present attitude of investigators concerning the 

 relationship between human and bovine tuberculosis. As the result of Koch's 

 investigations, it has become apparent that the danger of transmission of the disease 

 from animals to man or from man to animals has perhaps been exaggerated. The 

 seriousness of tuberculosis in dairying, however, is as great as ever, and it is urged 

 that the precautions which have hitherto been taken in preventing the spread of the 

 disease among dairy cows >ihouid not be abandoned. 



Transmission of tuberculosis, S. Bieler {Chron. Agr. Ca>iton ]'au(l, 14 {1901), 

 No. 19, pp. 467-471). — This is a controversial article occasioned by Koch's announce- 

 ment of the differences between bovine and human tuberculosis. The position is 

 taken that it is highly improper to abandon the various sanitary methods which are 



