Repository: UIHistories Project: Board of Trustees Minutes - 1886 [PAGE 243]

EXTRACTED TEXT FROM PAGE:

235 Second.—Since the relation between the total stretch and the elasticity is so close, the former may be accepted as fairly representing the latter quality in comparison of a large number of samples. The very much quicker method of testing may then be used, that is, to apply the strain gradually and continuously until rupture is effected, observing and recording the strain and total stretch. An illustration of the tests made by the first method, and the mode of recording them for a single sample, is illustrated in the following, giving the results for 10 fibres of Cotswold wool having an average diameter of 4.412 centimillimetres.

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Fibre 17.50 20.00 21.25 22.50 23.75 26.50 30.50 ! ! ! I i I Fibre 14.50 17.50 18.25 18.75 19.75 21.50 22.75 No. 1 1.00 2.00 3.00 4.00 5.00 6.00 7.00 No. 2. 1.00 i 2.00 I 3.00 ! 4.00 | 5.00 6.00 6.50

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11.75 14.50 16.00 16.50 17.75 20.50 21.75 Fibre

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Fi bre No. 6 1.00 2.00 3.00 4.00 •5.00 6.00 6.25 No. 7. 1.00 2.00 3.00 4.00 5.00 6.00 7.00 0.25 0.75 1.00 1.75 2.25 3.00

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20.50 21.75 22.50 23.50 25.25 28.25 r>3.50 37.50 Fibre

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Fibre 18.75 20.75 22.00 23.50 24.75 27.50 31.75 Fibre 17.50 20.00 20.50 21.50 22.50 25.00 29.25 31.50

No. 3. 1.00 2.00 3.00 4.00 5.00 6.00 7.00 No. 1.00 2.00 3.00 4,00 5.00 6.00 7.00 7.50 4. j j i ! j ! j !. 0.25 0.75 1.00 1.75 2.25 3.00 3.75 20.75 22.50 24.50 26.00 27.50 30.25 35.50 37.25 0.25 0.75 1.25 1.75 2.25 3.00 4.00 15.25 16.50 17.25 18.00 19.50 22.75

No. 8. 1.00 2.00 3.00 4.00 5.00 0.25 0.75 1.00 1.75 2.25 19.50 22.50 24.50 24.25 26.75 29.75 32.75

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0.25 0.75 1.25 1.75 2.50 3.25

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No. 9. 1.00 2.00 3.00 4.00 5.00 6.00 7.00 7.75 0.25 0.75 1.25 2.00 2.50 3.00 4.00 13.75 17.25 19.25 20.50 21.50

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Ft br e 16.00 18.75 20.75 22.50 23.50 25.75 29.75

No. 1.00 2.00 3.00 4.00 5.00 6.00 7.00 \ j 1 i ! 0.25 i 1.00 ! 1.75 2.25 3.00 .1 10.25 12.50 13.50 14.50 14.50 15.75

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No. 10. 1.00 \ 2.00 | 3.00 | 4.00 1 5 00 ! 6.00 j 0.25 0.75 1.25 1.75 2.50 3.25 21.00 24.50 26.25 27.50 28.75 33.00 36.75

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No. 1.00 2.00 3.00 4.00 5.00 6.00 6.75

15. 0.25 0.75 1.00 1.75 2.50 3.25

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