520 THE CORRECT PRINCIPLES OF BREEDING ANIMALS. 
introduced it with the bulb within the vagina, by gentle pres- 
sure and manipulation gradually complete the reinversion, which, 
with this assistance, is to be done with comparative facility, as 
the straining of the animal during the process can be readily 
resisted, and the space occupied by the instrument within the 
vaginal passage being so small, the principal difficulties attendant 
on effecting the replacement are by its use avoided. 
Having returned the whole of the inversion, and arranged it 
in its natural position, our object will then be to prevent a re- 
currence of the accident ; the catheter, therefore, should be im- 
mediately introduced and the bladder relieved, as by such a 
proceeding a frequent source of straining is avoided. The hind 
quarters must be kept elevated for several days, and the truss 
apparatus, before alluded to, applied and retained as long as re- 
quired : the medical treatment subsequently demanded will be, 
of course, suggested by the prevailing symptoms evinced in each 
particular case. 
Gentlemen, in the remarks I have had the pleasure of ad- 
dressing to you, I feel I have not in every instance been so 
explicit, or so generally avoided the use of technical expressions, 
as I could have desired : this 1 must request* you will chiefly 
attribute to the nature of the subjects passed in review; and 
with my sincere thanks for the patient attention and courtesy 
received during this lengthy, and I fear tedious, narration, be 
pleased to consider me at all times your most obedient servant. 
ON THE CORRECT PRINCIPLES OF BREEDING 
ANIMALS. 
WHATEVER opinion may be entertained of the value of 
purely physiological science as assisting the practical breeder, 
or as being useless to him and his operations, there can be no 
doubt that most of the correct principles of breeding animals 
were far antecedent to the teachings of science. Bakewell, the 
Codings, and Cully observed and acted on strictly practical data. 
They had no science to teach them, and they not only laid the 
foundation for all the thoroughly good breeds of animals which 
have appeared since their days, but some will affirm that they 
absolutely themselves had the very best. Physiology has illus- 
trated and enforced, has applied and built, a science on their 
skill and experiments, and has shewn how these agreed with, 
what by them they have discovered to be, the great principles 
of the science. 
