fully acknowledged and more clearly defined. Our relation to the lower animals has never yet been brought fully into the clear light of reason and conscience. Yet in the order of Providential development it must so come forward.
As advancing humanity has gradually recognised natural rights as existing in the various races of mankind—is carrying on a persistent warfare against human slavery—is slowly awakening to the moral crime of introducing disease and vice amongst native races; and the rights, as well as duties, of women and of children are being gradually recognised; so the time has come when the natural rights of inferior living creatures must be seriously studied.
This study has become obligatory, not only in regard to the welfare of the brute creation, but for the sake of our own human growth as rational and moral beings.
The common-sense of mankind recognises our right to use the lower animals for human benefit, whilst our superior intelligence gives us the power to so use them. But 'can' and 'ought' are different aspects of our mental constitution,
