1188 EXPERIMENT STATION KECORD, 



"The iiuuiunity coufcnx'd by vacciiuUinii, ;is hiihcrto iirncticod, does nut 

 appear to be satisfactory as regards degree or dunitioii. More evidence is 

 needed with regard to these points. The herds of large public institutions are 

 well adapted to decide these questions if vaccination is thoroughly applied, and 

 the animals supervised by ]iroi)erly trained men. 



" Insufficient immunity following vaccination may prove dangerous in giving 

 rise to mild cases, after ordinary exiiosure in infected lierds, which tend to 

 discharge tul>ercle baccili from small foci in the lungs. 



" The inununity accpiired by two vaccinations with human bacilli slwiuhl be 

 fortified bj- a subsequent hijection of attenuated bovine bacilli. 



" Investigations should be made loolving toward the selection, by the injec- 

 tion of attenuated bovine bacilli, of races or breeds of cattle which possess 

 naturally a high degree of resistance to tuberculosis. The capacity of different 

 breeds to acquire a high degree of immunity sliould also l)e investigated. 



"The survival of human and bovine bacilli in the lungs and udders of calves 

 vaccinated intravenously with them should be more delinitely determined. 



" Vaccines may be easily and cheaply prei)ared in the form of susiiensions 

 in fluids ready for injection. The length of time during which suspensions 

 maintain their highest efficiency remains to be determined." 



The vaccination of cattle against tuberculosis, J. F. Heymans (Arch. 

 Intcrnat. Pharmncod. ct Titer., 17 (1907), ^'o. 1-2, pp. 133-1J,6; 18 (1908), No. 

 3--'i. pp. 179-202). — Details of investigations previously noted (E. S. R., 20, 

 p. NTT I . 



Phagocytic immunity, J. C. Meakins (Jour. E.ept. Med., 11 (1909), No. 1, 

 pp. 100-117, eliurts 6). — From tlie experiments here described it is concluded 

 that animals immunized with living tubercle bacilli may develop phagocytic 

 immunity of a high degree and that such immunity may help to protect the 

 animal from a lethal dose of virulent tubercle bacilli. 



Further filtration experiments with virus of cattle plague, E. H. Ruediger 

 (r)iHippiite Jour. SeL, B. Med. Sci., 3 (1908), Xo. .'/, pp. 319-321, eliarts II).— 

 A continuation of investigations in which experiments with peritoneal fluids 

 (E. S. R.. 20, p. 790) were repeated. The author concludes that peritoneal 

 fluid retains its virulence on being passed through P>erkefeld filters marked V, 

 N, or W, but is harmless after having been passed through a ChamberJand 

 filter marked B. 



Tick fever, or redwater, S. Dodd (Dept. Agr. and Stock, Vet. Dlv., Queens- 

 land, Bui. 2, 1908; Queensland Agr. Jour., 21 (1908), Nos. 5, pp. 2'io-251; 6, pp. 

 308-317, fig. 1; abs. in Vet. Ree., 21 (1909), Xo. 1069, p. .'i38).— An account of 

 the history, causation, symptoms, post-mortem api)earance. and preventive 

 and curative ti*eatment of this disease. Including the life history of Margarojius 

 (Rhlpieephalus) auHtralis. Preventive inoculation and eradit-atiou of the ticks 

 are considered at length. 



Report on methods adopted for the eradication of cattle ticks in the 

 United States of America, S. Dodd (Queensland Agr. Jour., 21 (1908), Xo. 1, 

 pp. If1-51). — A summary is given of the work that has been carried on in this 

 country up to the end of 1007. 



Contributions to a biological study of Bacillus vitulisepticus and to the 

 immunization of calves against septicemic pneumonia, H. Schirop (Centbl. 

 Bait, [vie.], 1. Ahi., Orig.. .JT (190.S). Xo. J. ji/i. 3(l7-3.'i2 ; abs. in Bui. luj^t. 

 Pasteur, 6 (1908), Xo. 20 pp. 917. 918). — After studying Bacillus vitulisepticus 

 in different media and its pathogenic power for different species of animals, the 

 author conducted immunization exiieriments. He concludes that there are 

 many races of the bacillus since the monovalent serum protects animals against 

 the race used in pi'eparing the serum but only rarely against others. 



