NOTE TO SECOND EDITION. 



Knowing that many active and enthusiastic observers are working 

 constantly in the line of diseases of direct contagion this edition has 

 been delayed in the hope that some new and important discovery of 

 original research would be made, and to a certain extent we have been 

 rewarded by the work of Babes and of Negri in respect to the quick 

 diagnosis of Rabies. It has been thought possible that some one might 

 be able to make a culture of Distemper in dogs that would by inoculation 

 of the young animal render it either immune or at least slightly suscept- 

 ible to this disease. This, however, has not yet been accomplished. 



While the plan of the work, the admirable arrangement of which is 

 due to Dr. Muller, has not been changed a great number of alterations 

 have been made. The articles on Distemper, Rabies and Tuberculosis 

 have been remodeled, and the therapeutics throughout the work have 

 been brought up to the standard of the present day, the tendency of 

 which appears to be, and rightly, to use as little medicine as possible and 

 in small and convenient doses; and to pay particular attention to hygiene, 

 good nursing, and sanitation in kennels. 



I am indebted to Dr. John Reichel for assistance in the pathology 

 of Rabies, and to Walter McDougall for drawings. Plates in color after 

 my own photographs have been added. 



ALEXANDER GLASS. 



(vi) 



