Letter, from [Charles Francois de Cisternay] Du Fay to Cromwell Mortimer, dated at Paris Recommends M Reaumur and Stephen de Fourmont to the Fellowship and encloses a testimonial (29 March 1738) to this effect signed by L' Abbe Bignon, Cassini, Antoine de Jusiseu, Bernard de Jussieu, Du Fay, Geoffroy, Du Hamel du Monceau 30 March 1738