SEARCHLIGHTS ON HEALTH. THE SCIENCE OF EUGENICSBy PROF. B.G. JEFFERIS, M.D., PH. D. KNOWLEDGE IS SAFETY. 1. The old maxim, that Knowledge is power, is a true one, but there is still a greater truth: KNOWLEDGE IS SAFETY. Safety amid physical ills that beset mankind, and safety amid the moral pitfalls that surround so many young people, is the great crying demand of the age. 2. CRITICISM.--This work, though plain and to some extent startling, is chaste, practical and to the point, and will be a boon and a blessing to thousands who consult its pages. The world is full of ignorance, and the ignorant will always criticise, because they live to suffer ills, for they know no better. New light is fast falling upon the dark corners, and the eyes of many are being opened.