12 – Letter to Frederick Smith from Francis Galton, 15 Feb 1898

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[FS/3/3/2/12]

Feb 15/98

42, Rutland Gate, S.W.

Dear Capt Smith

I have gone through your paper and enclose some notes thereon, also some very rough work of my own open it, just to see how far its results correspond with yr results mine, unrevised & mainly by eye are

Draught Carrying power of a horse of 1000 lbs in weight, is 177lbs. For every 7 lbs in excess of, or less than 1000, add or subtract 1 lb of draught carrying power. Probable error of this estimate 3/2 lbs.

[[2]]

Please consider my notes on p. 1 & 5

Your addendum is a great improvement, I think

As a general upshot I am not sufficiently competent in the subject to submit the memoir to the R. Soc especially as it strikes me as not quite suitable for that particular society. But do not let my ignorant views affect your fuller

[[3]]

knowledge & sounder judgement

Very faithfully yours with renewed thanks for all you have so kindly done for me

Very faithfully yours

Francis Galton

P.S

I hope to go abroad next week, for a long stay in S France & in Sicily.

[[4]]

A insert “Direct investigation having been found inpracticable[sic] the method … was … [“]

B insert “estimated”

C ? as to the weight of the animal (that seems to be the only judgement tested)

D This seems to be a pelitio? principle.

E p5 How is the “probable error” got here?

I make the mean error to be about 6 lbs

13 – Postcard to Frederick Smith from Francis Galton, 16 Feb 1898

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[FS/3/3/2/13]

The following phrase in my letter was slack & inexact:-

“I make the mean error to be about 6 lbs” It should have been “I make the mean of all the differences in the two column to be about 6lbs.”

From one point of view of the problem the distinction is important: i.e. if pairs of entries in the 2 columns be considered as independent estimates of the same unknown facts.

F. Galton

14 – Postcard to Frederick Smith from Francis Galton, 17 Feb 1898

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The copyright of this material belongs to descendants of the creator. Images are permitted for reuse under a Creative Commons, Attribution, Non-commercial license.

[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

 

‘The Veterinarian’ Vol 71 Issue 2 – February 1898

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‘The Veterinarian’ Vol 71 Reports of Societies – February 1898

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This material has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights, and is being made available under the Creative Commons, Public Domain Mark.

‘The Veterinarian’ Vol 71 Issue 3 – March 1898

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This material has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights, and is being made available under the Creative Commons, Public Domain Mark.

‘The Veterinarian’ Vol 71 Reports of Societies – March 1898

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This material has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights, and is being made available under the Creative Commons, Public Domain Mark.

‘The Veterinarian’ Vol 71 Issue 4 – April 1898

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This material has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights, and is being made available under the Creative Commons, Public Domain Mark.

‘The Veterinarian’ Vol 71 Reports of Societies – April 1898

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This material has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights, and is being made available under the Creative Commons, Public Domain Mark.

‘The Veterinarian’ Vol 71 Issue 5 – May 1898

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This material has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights, and is being made available under the Creative Commons, Public Domain Mark.