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DCP-LETT-6775F

From:
Ponderer
To:
Athenæum
Date:
[before 5 June 1869]
Source of text:
Athenæum , 5 June 1869, p. 772
Summary:

Inquires how CD arrived at the conclusion that fifteen million elephants could be produced from a single pair in five centuries [Origin, 5th ed., p. 74].

Contributor:
Darwin Correspondence Project

DCP-LETT-6787

From:
Charles Robert Darwin
To:
Athenæum
Date:
19 June 1869
Source of text:
Athenæum , 26 June 1869, p. 861
Summary:

Thanks correspondent, "Ponderer", for pointing out his erroneous calculation of the rate of increase of elephants in Origin [p. 64]. [!?or p. 74!? (see 6775f), or 75, (see 6790)]

Contributor:
Darwin Correspondence Project

DCP-LETT-6806F

From:
Edward Lacy Garbett
To:
Athenæum
Date:
29 June 1869
Source of text:
Athenæum , 3 July 1869, pp. 18–19
Summary:

Calculations relating to the problem of the increase of elephants (see 6787).

Contributor:
Darwin Correspondence Project

DCP-LETT-6820

From:
Charles Robert Darwin
To:
Athenæum
Date:
7 [July] 1869
Source of text:
Athenæum , 17 July 1869, p. 82
Summary:

Because readers have arrived at different answers to the problem of the rate of increase of elephants, CD offers a rule, used by his son George, for calculating the product for any number of generations.

[Letter erroneously dated June.]

Contributor:
Darwin Correspondence Project

DCP-LETT-6836F

From:
Edward Lacy Garbett
To:
Athenæum
Date:
19 July 1869
Source of text:
Athenæum , 24 July 1869, p. 115
Summary:

More on the problem of the increase of elephants (see 6806f and 6820).

Contributor:
Darwin Correspondence Project
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