Dynamics of “Radiant Matter”

Abstract

AS the chief object of Mr. Preston's paper under the above title in NATURE, vol. xxiii. p. 461, seems to be to support Le Sage's “shelter theory” for gravity, you will perhaps let me point out one objection to that theory in any form which has hitherto been deemed conclusive, and with which Mr. Preston does not deal. It is that under it gravity would not vary, as it is known to do, equally with mass, but would vary not equally.