Offers to translate Orchids, since H. G. Bronn has died.
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Offers to translate Orchids, since H. G. Bronn has died.
He and L. C. Treviranus have repeated many of CD’s orchid observations with the same results. Sends his paper ["Fruchtbildung der Orchideen", Bot. Ztg. 21 (1863): 329–33, 337–45].
Pleased CD has had his [FH’s] orchid paper published [Ann. & Mag. Nat. Hist. 3d ser. 12 (1863): 169–74].
Extension of CD’s Primula heterostyly work.
Studying insect pollination in Salvia
and heterostyly in Pulmonaria officinalis which is similar to Linum case.
Sending his paper on tristyly in Oxalis.
Cannot attend botanical congress, where CD will be vice-president.
Assures CD of his belief in descent from his first reading of Origin.
Describes a case of dichogamy.
Explains dichogamy in Aristolochia. C. K. Sprengel was wrong.
Intends to begin a journal reviewing the botanical literature.
Sends his book [Die Geschlechter-Vertheilung bei den Pflanzen (1867)].
Reports making graft-hybrid potatoes.
Has found direct action of pollen in Mays [Zea] crosses and apple-trees.
F. Delpino has asked for CD’s address.
Sends graft-hybrid notice.
Thanks CD for mentioning his Corydalis and Primula experiments in Variation.
Has become Professor of Botany at Freiburg.
Encloses specimen of Corydalis cava.
Potato graft-hybrid fails to give potatoes.
August Weismann requests Wallace’s address to find out about experiments on butterflies hinted at in Variation.