Mr. Alfred R. Wallace writes to us:--"Although I do not suppose you will give more of your valuable space to this controversy, I wish to state that I have read carefully Professor Laycock's review, referred to by Dr. Carpenter, and that it in no way deals with the facts adduced by Richenbach, whose experiments have been repeated in this country by Dr. Ashburner and others. Among the 'sensitives' experimented on by Reichenbach were Dr. Endichler, the eminent botanist, and a number of other persons moving in the highest literary and official circles in Vienna, who all saw the flames from magnets, and confirmed the evidence of the 'sensitives' first experimented on. The evidence of these gentlemen is totally ignored by Professor Laycock and Dr. Carpenter."