Search: letter in document-type 
1870-1879 in date 
Johnson, Henry (a) in addressee 
Sorted by:

Showing 14 of 4 items

From:
Charles Robert Darwin
To:
Henry Johnson
Date:
25 Apr [1871?]
Source of text:
Catherine Barnes (dealer) (no date)
Summary:

Condolence on death of HJ’s daughter; "I know from old experience how bitter a loss it is".

Thanks for information about intelligence of dog.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Henry Johnson
Date:
23 Dec 1871
Source of text:
Private collection
Summary:

Is unable to accept invitation to Shrewsbury. Is grateful for offer of assistance at Wroxeter.

The weight of dry earth cast up by worms is 161/10 tons per acre annually.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Henry Johnson
Date:
2 May [1872]
Source of text:
Torquay Museum Society (AR470)
Summary:

Thanks for notes on worm-castings. Amount of ammonia surprises CD. David Forbes asserts that published analysis of carbon in vegetable matter valueless. Suspects that worms search for food and do not blindly swallow earth.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Henry Johnson
Date:
24 Sept 1879
Source of text:
Private collection
Summary:

Sends the requested signature,

with sympathy for HHJ’s state of health [see 12236].

Reports that HJ’s experiments on tension of parts are often quoted in German works and periodicals.

Contributor:
Darwin Correspondence Project