24 APRIL 1926, Page 19

Dr. Hall Sumner has plodded diligently and doggedly, in a

methodical German way, after the will of the wisp of relativity between The Brain and Mind (Unwire. as. 6d.). He begins a little slowly in his pursuit, but gets his second wind in Chapter HI. on Consciousness, and we think catches up

with the illusion at about Chapter V. on Neovitalism. There are interesting chapters on Sleep, the Subconscious and Suggestion. A powerful, rather ponderous little book. * * * *