Showing 1–20 of 76 items
Notes several cases of "dioecio-dimorphism" in different genera; feels the discovery of pollen that will act only on the pistil of another flower is most important. Believes CD should next turn his attention to investigating cases of "precocious fertilisation".
Discusses dimorphism and suggests CD investigate Valeriana.
Praises CD’s views with respect to the U. S. Civil War and relations with England. Worsening relations between Britain and U. S.
Observations on Platanthera.
Possibility of trimorphism in Mertensia.
Suggests CD try to get Lythrum hyssopifolia from France.
Dimorphic flowers.
Differences between newly opened and older orchids.
Flowers of Spiranthes and Goodyera.
Encloses maize seeds.
Has heard of a butterfly with pollinia of Platanthera stuck to it.
Comments on AG’s notes ["Dimorphism in the genitalia of flowers", Am. J. Sci. 2d ser. 34 (1862): 149–50].
"Precocious fertilisation".
Sees difficulties in adhering to the concept of design in nature.
Is surprised at Hooker’s and Daniel Oliver’s ignorance regarding spontaneous movements of tendrils.
CD should continue his work on climbing plants, "it will be fruitful in your hands".
Discusses CD’s and Mrs Gray’s health.
Comments on some climbing plants.
Praises Wallace’s article applying natural selection to man ["The origin of human races", J. Anthropol. Soc. Lond. 2 (1864): clviii–clxxxvi].
Discusses the reported sterility of the flowers of Voandzeia and Amphicarpaea.
Feels the ending of slavery is worth the cost of the Civil War.
Congratulates CD on the Copley Medal.
Is making inquiries on the habits of American cuckoos and sends a letter from Henry Bryant on that subject.
Discusses the Civil War.
Encloses letter from W. H. Leggett containing observations on Amphicarpaea.
Discusses arrangements for American edition of Variation.
Observations on apparently inherited instinct in a dog.
Agassiz denounces Origin as "atheistical";
AG is currently reviewing it [in Am. J. Sci. 2d ser. 29 (1860): 153–84].
Jeffries Wyman praises it, though not a convert.
Opinions on the Origin: AG thinks it masterly; Agassiz considers it very poor.
American edition of Origin. AG’s assessment of the book’s weak and strong points. Suggests Jeffries Wyman would be a useful source of facts and hints for CD.
Cases of "dioecio-dimorphism" as in primroses are widespread. AG always considered them the first step toward bisexuality.
Gives some observations on the sensitivity of Drosera species and comments on cases of "dioecio-dimorphism".
Discusses observations of his own and of John Torrey on dimorphism, especially in Amsinckia.
Is trying to find specimens of Houstonia for CD.
Discusses politics in the U. S. and relations between Britain and America.
Will observe Rhexia for CD to see whether it is dimorphic.
Has been reading J. D. Morell’s new book on psychology [An introduction to mental philosophy, on the inductive method (1862)].
Progress of the Civil War.
Has received first sheets of Orchids and is very impressed. "What a skill & genius you have for these researches."
Details of U. S. orchids.
Discusses heterostyly in Houstonia.