And explain the probable source of difference

And explain the probable source of difference

And explain the probable source of difference

To reconcile, in some measure, the opposite opinions, and explain the probable source of difference, let the reader consider the possible conditions of the animals I and others have subjected to observation. The medical man, when experimentalising upon a dog, generally buys the animal; and as he merely wants a life to practise upon, he does not give money to procure beauty or high breed; cheapness is an object with him; and any unfortunate straggling brute, that can with impunity be trapped, is sufficient for his purpose. Such unhappy creatures are to be caught roaming about the country; perhaps poorly fed, but strong and low-bred curs.