Summary

Germination of Megarrhiza.

Summary

Roots arising from stems and shoots of brambles.

Summary

Origin reached AG at Christmas. Louis Agassiz cannot abide the book and has publicly denounced it as atheism. AG feels bound to defend the book and counter the "demagogue" Agassiz. Has written a long article to this end [Am. J. Sci. and Arts 2d ser. 29 (1860): 153–84].

Summary

Describes the flower and mode of action of a particular orchid.

Has been examining Spiranthes and is experimenting to see whether insects are necessary for its fertilisation.

It seems that Oncidium is designed so as not to be fertilised.

Summary

Germination and root of Ipomoea.

Summary

Encloses a letter from Volney Rattan of California.

Summary

Thanks for the letter from Volney Rattan [see 12553].

Discusses protective adaptation of seedlings from frost.

Summary

Confirmation of CD’s idea: AG planted seeds Ipomœa pandurata. One seed has come up and its germination is same as of I. leptophylla.

Summary

Information about Ipomœa jalapa.

Summary

Apologises for his silence when Francis Darwin’s paper was read at the Linnean Society.

AG’s review of Movement in plants [Nation 32 (1881): 17–18].

Summary

Thanks for AG’s reviews [of Movement in plants] in the Journal and Nation [Am. J. Sci. 3d ser. 21 (1881): 245–9 and Nation 32 (1881): 17–18], especially for AG’s comment about Frank Darwin.

Summary

Asks AG to forward [unspecified] enclosure to Chauncey Wright.

Summary

Is collecting facts on variation; questions AG on the alpine flora of the U. S.

Sends a list of plants from AG’s Manual of botany [1848] and asks him to append the ranges of the species.

Summary

Has filled up CD’s paper [see 1674].

Distribution and relationships of alpine flora in U. S.

Summary

Suggests AG append ranges to the species in the new edition of his Manual.

Is interested in comparing the flora of U. S. with that of Britain and wishes to know the proportions to the whole of the great leading families and the numbers of species within genera. Would welcome information on which species AG considers to be "close" in the U. S.

Summary

Sends a list of "close" species from his Manual of botany.

Hopes Hooker or CD will write an essay on species. Discusses some of the difficulties of defining botanical species.

Summary

Geographical distribution. "Close" species. Hopes AG will write an essay on species.

Summary

"Close" species in large and small genera.

Alphonse de Candolle on geographical distribution [Géographie botanique raisonnée (1855)].

Species variability.

Summary

Suggests affinities of the U. S. flora that he considers would be worth investigating. Wants to know the ranges of species in large and small genera.

Questions AG on naturalised plants; whether any are social in U. S. which are not so elsewhere and how variable they are compared with indigenous species. Would like to know of any differences in the variability of species at different points of their ranges and also the physical states of plants at the extremes of their ranges.

Summary

Asks whether Allegheny Mountains are sufficiently continuous so that plants could travel from north to south along them.

Hopes AG’s work on geographical distribution is progressing, as he has questions on plants common to Europe which do not range up to Arctic.

Are intermediate varieties less numerous in individuals than the varieties they connect?