Showing 21–25 of 25 items
Elected today as Chancellor of Cambridge University. Thanks for JH's support.
Notes loss of many old friends. Three years seclusion with bad health produced WW's treatise on conic sections, translated to Russian. Sends book on geometrical theorems and two memoirs. Discovered JH stated in 1813 what WW thought was recent discovery about catenary.
New magnetic observatory to be established in India. Instrument, made by [T. R.] Robinson and Mr. Newman, will be sent to R.S.L. for examination and testing before shipment. Questions best times for daily barometer observations.
About the calculations of JE, and others, on the motion of the solar system.
JDH writes to give his father, William Jackson Hooker, an account of Kerguelen Island. First comments on places they passed on the voyage there. Agulhas bank; rich with marine animals, Macrocystis pyrifera & seas birds incl. Albatross & Cape Pigeon which provided fresh meat. Marion Island; noted for volcanic mountains, penguin colonies, white coral & diverse marine life. The Crozets; found far East of the mapped position. Possession Island; barren of all but grass & moss. May 6th reached Bligh's Cap. After days of delay due to bad weather landed at Christmas Harbour, Kerguelen Island, on 12th. Describes the harbour, terraced mountains, rocky landscape & persistently violent seas, with reference to account by Captain Cook. Describes the Kerguelen Island vegetation. First plants encountered are seaweed & lichens on the rocks, then a long grass Agrostis species, a Ranunculus & a Compositae abundant in bogs & covered with Callitriche & Portulaceaous plants. Gives detailed description of the Kerguelen cabbage incl. its taste & medicinal properties i.e. preventing scurvy & heart burn. Also describes an unmbelliferous plant that can cover many acres & is the only plant that does not seem to be endemic to Kerguelen. Also notes: Acaena, a Silene of elusive classification, a Poa grass, a marsh Aira & a Juncus that grows near lakes. Describes the characteristics & habitat of a plant that flowers under the frozen lakes, it may be of a new natural order though it has some features of Scrophulariaceae, Lentibulariaceae & Primulaceae. Makes some observations on the winter climate. Notes that there is 1 aquatic plant & 1 dry land plant, most vegetation grows in between in moist peaty areas. The mosses & Jungermannia were alpine & arctic forms. Describes the proliferation of lichens in different areas, though there are no large trees so no parasitical lichens. Describes prolific seaweeds esp. pyrifera & Laminaria radiata which protect limpet colonies. The only fungi is a Peziza.