IN NATURE of May 13 (p. 308) Dr. Hill states that “no volatile body, the density of which is not greater than that of air, is a stimulant of our olfactory membrane.” I venture to suggest some ...
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, Vol. 117, No. 776 (Dec. 1, 1927), pp. 11-29 (22 pages) ...
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