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Hardcastle, Joseph Alfred in author 
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From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
[10 December 1867]
Source of text:
TxU:H/M-0241; Reel 1087
Summary:

Please clarify differences between French metric system and JH's adaptation of British system of measurements. Willing to raise issue in Parliament, but wants to understand it well. Hopes to see Emma soon.

Contributor:
John Herschel Project
From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
28 April [1868]
Source of text:
TxU:H/M-0242; Reel 1087
Summary:

Problem of Irish church has forced postponement of Parliamentary discussion of metric bill until 13 May.

Contributor:
John Herschel Project
From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
30 April [1868]
Source of text:
TxU:H/M-0243; Reel 1087
Summary:

Thanks for JH's notes on metric system. Will study these before Parliamentary debate on 13 May. Calculates that 63 percent of exports go to British possessions, while only 18 percent go to Continent. Sees this as argument against introducing metric system.

Contributor:
John Herschel Project
From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
[2 May 1868]
Source of text:
TxU:H/M-0244; Reel 1087
Summary:

Why did French chose arc from Dunkirk to Barcelona as basis for metric measurements? Explain meridian lines. Why are linear metric measurements founded on arc, rather than on straight line? Criticizes William Ewart for introducing metric bill.

Contributor:
John Herschel Project
From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
[11 January 1870]
Source of text:
TxU:H/M-0245; Reel 1087
Summary:

Just received another copy of JH's 'Half a Dozen Propositions Respecting the Gold Coinage' from son Henry Hardcastle. These should create problems for Chancellor of Exchequer. Hopes to understand these before Parliamentary discussion on gold currency begins.

Contributor:
John Herschel Project