Life and Matter: A Criticism of Professor Haeckel's "Riddle of the Universe"
1940
Raymond; or, Life and Death: With examples of the evidence for survival of memo…
1940
The Ether of Space
1940
Signalling across space without wires: being a description of the work of Hertz…
1940
Pioneers of Science
1940
The Substance of Faith Allied with Science (6th Ed.): A Catechism for Parents a…
1940