WORKS BY THE SAME AUTHOR MODERN VIEWS OF ELECTRICITY. LIFE AND MATTER. PIONEERS OF SCIENCE (Illustrated). SCHOOL TEACHING AND SCHOOL REFORM. EASY MATHEMATICS, ARITHMETIC, etc. ELEMENTARY MECHANICS. SIGNALLING WITHOUT WIRES. MODERN VIEWS ON MATTER. THE SUBSTANCE OF FAITH. ELECTRONS. THE ETHER OF SPACE. SCIENCE AND IMMORTALITY. THE SURVIVal of Man. |