118 



chief and his staff are kept busy all the time. Results of this 

 branch of the agricultural bureau's services will become more 

 valuable and appreciated as the years pass. Righteousness is 

 truly declared in Hawaii's motto to be the "life of the land," 

 but water in its way is equally an essential element in the coun- 

 trv's vitality. 



DIVISION OF ANIMAL INDUSTRY. 



HOG CHOLERA. 



Honoluhi, March 31, 1915. 

 To the Commissioners of the Board of Agriculture and Forestry. 



Gentlemen: — I am pleased to report that the hog cholera situa- 

 tion appears to be favorable in a general way to the hog industry. 

 There have practically been no losses during the past month and 

 the largest hog raiser on this island, who has in the neighbor- 

 hood of 900 head, has lost less than half a dozen large animals 

 during the past three months, and only a comparatively small 

 number of young pigs have succumbed to pneumonia. It has 

 therefore not been necessary to resort to serum injections on a 

 large scale, but experiments with pneumonia serum have been 

 carried on at this place, as well as at Mr. Atkinson's ranch near 

 Watertown. No definite results have so far been obtained from 

 these experiments, but it is believed that if applied systematically 

 a considerable percentage of young pigs may be saved by this 

 treatment. 



In regard to the general injection of hog cholera serum to- 

 gether with hog cholera virus, that is the so-called "serum simul- 

 taneous method," and which several hog raisers have l)cen desir- 

 ous of applying to their herds in order to protect them against 

 any hog cholera infection which might ])Ossibly remain here, I 

 wish to quote from a magazine recently received, as follows : 



'Tn sections where hog chtjlcra is not present and has not pre- 

 vailed for a year or more it is unwise to use anti-hog cholera 

 serum, and it should be illci!;al for anyone to afply the simul- 

 taneous method. L'nder such conditions no i^rotection is needed, 

 and the immunity ])roduced by the use of .serum alone is not 

 economically justifiable, while the use of virus no doubt infects 

 premises where it is used and thus centers of intection arc eslab- 

 iishcd in a cholera free zone." 



This would seem definitely to su])i)(irl tlic stand taken b\' this 

 division, that is, that hog cholera virus should not be introduced 

 here unless a virulent form of hog cholera should make its a])- 

 pearance and s])r(ad to many herds in the Territory. 



From Maui Dr. litzgerald reports that he has had good suc- 

 cess with the serum treatment at the drove Kanch outbreak. 



