CD notes growth of Royal Society may force it to hire officers.

Speculates on cold resistance of bacterial germs.

Will communicate to Royal Society Frank’s paper on the ingestion of solid particles by the protoplasmic protrusions of Dipsacus glands.

CD working on plant dimorphism.

Thanks CD for calling attention to a "considerable error" in his observations on Hottonia fertility [in Die Befruchtung der Blumen (1873)]. [See Forms of flowers, p. 52.]