CHAP. II. J SINGLE AND VARIED TUMOURS. 311 



cleanse itself. Again, we may remark in general, 

 that as it is the better bred animals that are most 

 liable to affections of those organs, so is it the 

 " country-bred cattle," without any breeding in 

 them, that mostly suffer these external attacks. To 

 the reflection of every man of experience we refer 

 this material point of dissonance between the two 

 varieties of horse ; which also serves to prove, that 

 those horses which have great lumps of muscle at 

 the parts liable to such attacks, are most disposed 

 to contract local inflammation, and that jmffing up 

 of gland or lymphatic we call tumour of various 

 kinds. Local inflammation alone, however, could 

 not effect the evil, without some corresponding 

 cause : else how comes it to, pass that none but aged 

 horses, that are heavy in the hand and slow in 

 blood, readily contract fistula or abscess ; young 

 and lively horses, and those with some breeding 

 in them, never ? Once more, — if the disorder re- 

 side not in the blood, how does it come to pass, 

 that a horse having contracted one species of tu- 

 mour, he is never known to undergo an attack of 

 any other species at the same time — and there are 

 a dozen at the least ? For example, give a horse 

 the poll-evil, and see how little he will be disposed 

 to contract the glanders. 



Fleshy horses, those of the cart breed, and of in- 

 dolent habit of body, are most liable to contract 

 poll-evil, fistula, &c. ; indeed, we might say, the 

 ready disposition thereto is confined to that breed, 

 though either could be inflicted upon higher bred 



