No summary available.
Showing 1–20 of 144 items
No summary available.
Writes in relation to a batch of lenses for JSH, includes a list of lens types and a price for the whole batch. Includes instructions for mounting them.
Discusses intention to rectify error in sending books to JSH and arranges receipt of batch of lenses by JSH.
No summary available.
No summary available.
Responds to CD’s letter. The ova of Salmonidae exposed to air, if kept moist, will stay alive up to 72 hours.
No summary available.
The only mainland vegetation he saw on Falkland Island shores were trees. Remembers no strange birds there, but on journey home saw a woodcock more than 500 miles from the nearest land.
Provides another case of apparently pure bred pointers producing litter with one setter puppy. Correspondent was told that this occurred in several litters; gives names of owners and others who can corroborate the information.
Comments on possibility of transport of seeds of Arctic plants by ice.
No summary available.
CD has suggested an explanation of how pike were introduced to a remote lake in Ireland by cormorants [carrying pike spawn on their feet or in their gullets].
Hybrid insects.
Description of the Salvages.
Variability of "transition groups" of insects; relation of variability to ranges of insects. The variability of wings, even within species. Reduction of flying ability on isolated islands.
Forbes’s "Atlantis" theory and insect fauna of the Atlantic islands, considered with regard to insect migrations.
Gives instances of sexual differences in the number of tarsi within species of Coleoptera and also variation in the number of tarsi between related species.
CD’s tabulation of colonists curious but explicable.
Working on Tasmanian flora; contemplating general essay on Australian distribution: Tasmania and Australia same alpine species; Swan River flora very peculiar and quite distinct from New South Wales.
Trying to establish new journal at Linnean.
Latitude overrules everything in distribution. Alpine distributions are like insular. Tabulating proportions.
T. V. Wollaston’s Madeira insects: many flightless, thus not blown to sea. TVW’s insects do not confirm Forbes’s Atlantis.
No summary available.
Comparison of skulls of Ichthyosaurus and Cetacea.
Acknowledges a list [of plants?].
Looks forward to new edition [of British plants growing wild in the parish of Hitcham, Suffolk, 2d ed. (1855)].
JSH should not trouble about Anacharis until he is less busy. Will send cirripedes.
JDH criticises C. J. F. Bunbury’s paper on Madeira [J. Linn. Soc. Lond. (Bot.) 1 (1857): 1–35].
Absence of Ophrys on Madeira suggests to JDH a sequence in creation of groups.
Why are flightless insects common in desert?
Australian endemism.