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Ercolani, G. B. in correspondent 
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From:
Charles Robert Darwin
To:
Giovanni Battista Ercolani
Date:
3 Mar 1877
Source of text:
Biblioteca Comunale dell’Archiginnasio, Bologna (Collezione degli autografi, XXIII, 6542)
Summary:

Thanks GBE for his essay on the placenta [Sull’unità del tipo anatomico della placenta nei mammiferi e nell’umana specie (1877)].

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Giovanni Battista Ercolani
Date:
14 Apr 1880
Source of text:
Biblioteca Comunale dell’Archiginnasio, Bologna (Collezione degli autografi, XXIII, 6543)
Summary:

Thanks GBE for his great work on the placenta [Nuove ricerche sulla placenta nei pesci cartilaginosi e ne mammiferi (1880)]. The relationship between placental structure and mammalian classification has always seemed interesting to CD.

Contributor:
Darwin Correspondence Project