The establishment of sanitary improvements by Government, and the remodelling of education, are not the only means by which we must seek to obey those Divine laws which are implanted in our nature. Every class of society, every institution--in short, our whole social life--needs to be re-born into the idea of health. The customs to which we all conform, whether rich or poor, the standards by which we measure success in life, and the means by which we seek to reach it, are all opposed to the idea of health. The hours we keep, our dress, our food, the excitements and strain of life, are injurious alike to mind and body. The deeper we look into the structure and state of society, the more serious are the effects of the general neglect of the laws of human growth. Practical life now is a cruel foe to pure enthusiastic youth; purity and enthusiasm are alike destroyed by the corrupt and faithless society into which they enter. We preach one standard of right; we practise another. We exact a superhuman effort from our children when, surrounded by temptations, we tell them not to fall into evil habits; we require an impossible thing when we expect them, as social beings, to do what is right when society does what is wrong. The diffusion, therefore, of sanitary knowledge through all classes of adult society is as necessary as the remodelling of education. It is through the gradual diffusion of this knowledge that combinations of individuals may be formed who will be strong enough to put down some of the senseless and injurious customs that now pervade society. This principle of combination may wield a great and increasing power for good. Departure from any established custom by a single individual is an eccentricity, but the union of fifty for the same purpose will exercise a decided influence, and a hundred resolute men and women form a social power in the State. It is encouraging to recognise the power that might be exerted by such a band resolved to carry out the ‘Laws of Health’ in their daily lives! There is only one form of combination, however, that I shall venture to suggest, and whose utility I think will be at once apparent.