AS TO SOUNDNESS. 115 



3. Thoropin or Thorough Pin. 



4. Curb. 



5. Capped Hock. 



Bone spavin is perhaps the commonest of all diseases 

 for which a purchased horse is returned to those who 

 have sold it. This is rather a bold assertion, but it is 

 the result of experience, I am sure again that there 

 is no prejudice in the horse universe of such strength 

 with such slender foundations. From the first year of 

 my apprenticeship (i86c) to this day, I have kept thi^ 

 particular matter ever before me, because in that year 

 my attention was so strongly drawn to the subject by 

 reading the notes of the late Professor Barlow's lectures. 

 Gentlemen, you may not have heard of Professor Barlow. 

 He, I may tell you, taught anatomy in this college 

 many years ago, and he was without doubt perhaps the 

 most promising member this profession has ever had. 

 He killed himself by his devotion to his profession. 

 His principal tool was the microscope — the instrument 

 without which no sound pathology can be established 

 — the trowel which alone can surely lay the medical 

 science foundation-stone, which a sound pathology surely 

 is. From Professor Barlow's notes I feel sure that he 

 held a very liberal opinion with regard to the hock joint. 

 He pointed out strongly, and Professor Dick agreed with 

 him, that hocks might be very coarse at their lower parts 

 without being necessari^ly spavined. The bones involved 

 in spavin — give them wtiat names you please — are made 



