Discusses geometry related to the structure of bees’ cells. Encloses notes and diagrams dealing with intersections of spheres.

There is much weight in what RIM says about not breaking up the natural history collection of the British Museum. The botanical collection might be moved to Kew, but CD thinks "it would be the greatest evil which could possibly happen to natural science in this country if the other collections were ever to be removed from the British Museum and Library".

Thanks TR for his paper on magnetism and his article on speculae. Discusses [J. P.] Gassiot's work on galvanic stratification. JH's health is better.