REMOVE

1. Science--Great Britain
2. 1807-04-19

WHAT

1. Correspondence (3)
2. Letters (3)

WHERE

1. England: Greater Manchest … (3)
2. Scotland: Edinburgh (3)

WHO

1. Dalton, John, 1766-1844 (3)
2. Johns, William, 1771-1845 (3)

WHEN

1. 19th Century CE (3)