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'Sir.

The Actinometer is now finished & in working order, & we should be glad to know what you would wish done with it. We understand from Captain Abney that he would try it & if this meets with your approval we will send it to him to test & criticize & report upon to you. Will you be good enough to let us know how to act in this matter.

Faithfully yours,

A.G. Dew-Smith, for the Company.' (f. 84)


 

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