Congratulates CL on finding Arctic shells.
Comments on paper by E. B. Hunt ["On the origin, growth, substructure and chronology of the Florida reef", Am. J. Sci. 2d ser. 35 (1863): 197–210].
Mentions J. D. Dana’s health.
George Bentham’s statement on species [Proc. Linn. Soc. Lond. (1863): xi–xxix].
Praises Bates’s book [Naturalist on the river Amazons (1863)].