70 



EX PERIMENTA L FA RMS. 



The young fruit of B. Thunbergii 

 when first formed, is of a pale green 

 colour ; that of the purple barberry is of 

 a briijht red hue; vvhile the fruit of the 

 hybrids is of a dull reddish shade. 



Fig. 15. 



FiR. 16. 



From these particulars it will be seen that the hybrid barberries, of which there 

 are four, are intermediate in character between the parents, in leaf, flower and fruit, 

 also in the time of blossoming. 



Very eflicient help has been rendered me in carrying on this work during the past 

 nine years, by my assistant, Mr. W. T. Macoun; also by Dr. C E. Saunders, who has 

 done much of the recent work on the fruits, and Dr. A. P. Saunders, who made some of 

 the earlier crosses in wheat and who rendered special assistance in the cross-fertilizing 

 of cereals at the branch experimental farms during the summer of 1892. 



TUBERCULOSIS. 



It is much to be regretted that further trouble has developed from this disease, 

 more particularly among the cattle at the Central Farm. When Bulletin No. 20 

 was published, in February, 1894, and the subsequent report issued on the branch 

 farms in the annual report of the experimental farms for that year, giving full 

 particulars of the discovery of tuberculosis and the means applied for its eradication, 

 with the very thorough after precautions taken in disinfecting the premises, it was 

 hoped that immunity from this disease would be had in future. At that time, however, 

 the insidious nature of tubercular disease, the extent to which it prevails and the 

 difficulty of completely eradicating it, were not so fully understood as now, and with the 

 reliability of tuberculine thoroughly established and the process of testing officially 

 recognized, there will probably be no difficulty in future in the way of using the tuber- 

 culine test from time to time, and thus preventing any lurking germs of this disease 

 from further spreading in the herd. 



After the number of cattle had been reduct d at the Central Farm by the slaughter 

 necessary to get rid of this disease in 1893, additional cows were required to carry on 

 some experiments in dairying. These could not be bought at that time subject to the 

 tuberculine test, the use of tuberculine as a test for the disease had been but very 

 recently introduced, and many skilled veterinarians did not believe in its reliability, and 



