GUAM AGEICTJLTUEAL EXPERIMENT STATION. 11 



bull showed but little desire for food or water, stood but little, and 

 fell away rapidly in flesh. As the temperature dropped to normal the 

 animal gradually recovered his usual appetite and soon regained his 

 former condition of flesh. In each of the series of high temperatures 

 observed in the various imported animals, since their introduction 20 

 months ago, symptoms similar to those just described have been noted. 

 At the close of the fiscal year encUng June 30, 1913, the cattle in the 

 station herd numbered 21, which are divided into pure-bred Ayr- 

 shires, Ayrshire-native cross-bred animals, and native stock, as 

 follows : 



Pure-bred stock: 



Ayrshire cows 2 



Ayrshire bulls 2 



Ayrshire calves 2 



Total number of Ayrshires 6 



Grade stock: 



Ayrshire X native bull I 



Ayrshire X native heifer 1 



Total number of grades 2 



Native stock : 



Cows 6 



Heifers, weaned and under two years 4 



Young bull, weaned calf 1 



Unweaned calves (bulls) 2 



Total number of native scrubs 13 



HOG BREEDING. 



The progress shown in this Une of the breeding work during the 

 first half of the fiscal year was specially gratifying, no other Une of the 

 work having attracted as much attention. In April disease broke 

 out among the breeding stock, resulting in the loss of both pure-bred 

 Berkshire boars and one of the pure-bred sows of the same breed. 

 The two sows from the original importation having failed to breed 

 prior to the loss of the boars, our pure-bred stock was thus reduced to 

 a single sow, and the perpetuation of the pure strain without further 

 importations was rendered impossible. The death of the two boars 

 was specially regretted, as the cross by them upon the native sows 

 had proved a remarkable improvement in size, quick development, 

 and general conformation over the inferior native scrub hog. The 

 advantages derived from the use of a superior sire being more quickly 

 demonstrated in hog breeding than in the breeding of animals of 

 larger size, this work has met with greater manifestations of interest 

 than has been shown in any of the other Hnes of animal breeding. 

 Between the dates of their introduction and death, covering a period 



