Evidence relevant to E. Forbes’s land-bridge theory.
Evidence relevant to E. Forbes’s land-bridge theory.
Do the plants that are common to Europe and North America nearly all live north of the Arctic Circle? CD bases his question on HCW’s "capital" comparison between relations of Europe to North America and Europe to E. Asia if the intervening land had been submerged. CD has been led to speculate that in the mid-Pliocene the organisms now living in middle Europe and northern U. S. lived within the Arctic Circle. Subsequent movements of this flora with advance and retreat of glaciers would explain present distribution better than Forbes’s vast submergences.
Would like to compare the length of the wings of non-migratory and migratory swallows.
Wonders if EWVH could show him skins of Columba livia.
Smallpox in the village. Death of Joseph Parslow’s son.
Regrets letter read the night before at the R.A.S. of JH's wish to resign and hopes JH's health allows him to come occasionally and be a nominal member. Discusses Piazzi Smyth's preparations for voyage to Teneriffe.
Does not intend to work systematically on cats. Their origin is in doubt and they have been crossed too many ways.
It would be valuable to know whether half-bred ducks are fertile inter se or with a third breed. Is investigating this with pigeons.
No summary available.
No summary available.
No summary available.
Celebration planned for arrival of MH and IH. Son John is home from Addiscombe. JH's health. News of Hawkhurst. Regards to Mr. and Mrs. Greig.
No summary available.
Sending him a copy of her Familiar Astronomy and inviting his comments on this work. His works are well known in America.
Sends a cultivated specimen of Myosotis (first generation) grown from seed sent by JSH. Asks for a tuft of flower.
Hopes JSH will publish a book on teaching botany, because he has no idea how to begin with his children.
Condemns theory of Edward Forbes and others that many islands were formerly connected to South America by now submerged continents.
No summary available.
Comments on Huxley–Falconer dispute [see "On the method of palaeontology", Ann. & Mag. Nat. Hist. 18 (1856): 43–54].
Wollaston’s On the variation of species [1856].
Has exploded to Lyell against the extension of continents.
Plants common to Europe and NW. America as result of temperate climate.
No summary available.
CD forgets an author [CD himself in Coral reefs] "who, by means of atolls, contrived to submerge archipelagoes (or continents?), the mountains of which must originally have differed from each other in height 8,000 (or 10,000?) feet".
CL begins to think that all continents and oceans are chiefly post-Eocene, but he admits that it is questionable how far one is at liberty to call up continents "to convey a Helix from the United States to Europe in Miocene or Pliocene periods".
Will CD explain why the land and marine shells of Porto Santo and Madeira differ while the plants so nearly agree?
No summary available.
Seeks to verify whether bulldogs have degenerated in India [see Variation 1: 37–8].
CD has "sometimes gone so far as to doubt whether climate has any influence even on colour".