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Darwin, C. R. in correspondent 
Lowe, R. T. in correspondent 
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From:
Richard Thomas Lowe
To:
Charles Robert Darwin
Date:
19 Sept 1854
Source of text:
DAR 205.9: 392
Summary:

The land shells, both fossil and recent, of Madeira and Porto Santo have features peculiar to them, so RTL would have no difficulty in identifying them.

Contributor:
Darwin Correspondence Project
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From:
Richard Thomas Lowe
To:
Charles Robert Darwin
Date:
12 Apr 1856
Source of text:
The University of Edinburgh Centre for Research Collections (Lyell collection, Journal I: 132–6)
Summary:

Discusses the flora of Porto Santo in relation to that of Madeira. While these islands have some 20 endemic species in common, there are 7 or 8 species endemic to Porto Santo alone, and 25 common to Porto Santo and Europe that are not found on Madeira. Believes the great difference in soil and climate is enough to explain this: plants common on one island cannot be made to grow on the other. Believes J. D. Hooker has underestimated the number of species endemic to Madeira. There are some remarkable endemic species of common plants in the Dezertas.

The eel is the only freshwater fish on Porto Santo and Madeira.

Contributor:
Darwin Correspondence Project