To insure accuracy, the author has been careful to compare the results 

 of his own dissections with the descriptions of other writers, and more 

 especially with the works of Percivall, Leyh, and Chauveau, to which he 

 begs to express his indebtedness. 



To Professor Turner the avithor is under deep obligation for the 

 revision of the chapters on the brain, the eye, and the ear, and for much- 

 esteemed suggestions regarding other points. 



Finally, the author's best thanks are due to his brothers Gavin and 

 Andrew, who have carefully revised the entire proof-sheets, and to 

 Mr. T. Barker, veterinary student, for assistance in making the index. 



RoTAi, (Dick's) Veterinaky College, Edinburgh, 

 October, 1884. 



