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Germination and root of Ipomoea.
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Is keeping down his expenditure; has some landowners growing potatoes for him.
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Impoverished German doctor asks for money.
Sends a poem he has composed in honour of CD.
Describes studies with Ernst Haeckel
and research on psychology of lower animals.
Sends book [Der thierische Wille (1880)] and describes his views on the subject.
Quote from letter to Rouquette in dedication of an essay to CD.
CD thanks the author for the copy of Der thierische Wille.
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Thanks for interesting letter; is sure it would be worth while to test fertility of illegitimate offspring of heterostyled plants.
Would welcome any information on occurrence of bloom-covered leaves on dry plains.
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Encloses a letter from Volney Rattan of California.