1898
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[FS/3/3/2/14]
It wd perhaps be better if you explained the way at wh: you arrived at the Prob: Error, in a note to the paper.
My work was purposely devoted to the first batch & and was little more than exploratory so to speak.
Thanks again for your kind offer to help. I have a batch of photos now in hand made by a friend under somewhat different conditions. I leave England on Tuesday I hope
Francis Galton