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Joule, James Prescott in correspondent 
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From:
James Prescott Joule
To:
Sir John Herschel
Date:
[24 April 1843]
Source of text:
RAS:JH Archive 3/7.13; Reel 7
Summary:

Refers JH to page 18 of memoir of Manchester Literary and Philosophical Society, in which JJ, using 'the magnetic electrical machine,' succeeded in proving 'that heat may be generated by mechanical power without accompanying chemical change.'

Contributor:
John Herschel Project
From:
James Prescott Joule
To:
Sir John Herschel
Date:
[29 October 1846]
Source of text:
RS:HS 10.428
Summary:

Has been carrying out a series of experiments with spiders immersed in acids and finds their bodies are not protected in any way. Has also been experimenting with elastic tissues to see if there is a change of temperature.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Prescott Joule
Date:
[26 December 1857]
Source of text:
RS:HS 23.216
Summary:

Thanks JJ for the counterfeit coin he sent; JH comments on the possibility of oval coinage.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James Prescott Joule
Date:
[21 October 1863]
Source of text:
RS:HS 10.429
Summary:

Thanks for his paper on amalgams. Regarding the amalgam of iron, he pointed it out many years ago in his Bakerian lecture. Would be interesting to experiment further with iron in solution of mercury.

Contributor:
John Herschel Project
From:
James Prescott Joule
To:
Sir John Herschel
Date:
[24 October 1863]
Source of text:
RS:HS 10.430
Summary:

Much obliged for his letters regarding the amalgam of iron. Cannot account for his ignorance of JH's Bakerian lecture.

Contributor:
John Herschel Project