On fossils ([Megatherium], etc.), plants, shells sent and new ones found; geological observations. Asks for help in understanding cleavage and planes of deposition.

A new species of ostrich. Cites differences in size, colour, nidification, and geographical distribution.

CD asks the time of shipment and vessel in which the [Megatherium] bones were conveyed.

Patagonia swarms with guanaco, but few other creatures.

Hopes to be able to draw up a tolerable sketch of the geology of the east side of S. America.

Saw Jemmy Button, who is married and will stay in Tierra del Fuego. Mentions Falkland uprising.