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number of authors have written on this subject, than I was aware of; so that, in all probability, we have not made any new discoveries. I enclose to you the result of our enquiry; and the few obvious reflexions which occurred. If they appear to contain any thing worthy notice, you will please to communicate them to the Royal Society. I am,
Dear Sir,
Your most obedient and
Charter-House,
Jan. 10th, 1764.
Obliged humble Servant,
The
