Will be very glad to send his paper to the gentlemen concerned, but encloses their names and addresses in case JH wishes to send direct.

Apologizes for not having answered earlier. JH's health has been 'indifferent.' Received 'Sur un Problème curieux de Magnetisme' yesterday. Discusses 'alleged free suspension of Mahomet's coffin.' Agrees with JP that 'establishment of a stable equilibrium under the influence of mere magnetic forces is impossible.' Elaborates on an experiment relating to the 'problem.' Lists the works by JP that he has.