[94]

[sketch] tied with strong Thread

Crack measured with micrometer under microscope

You say before 4 mm in width

I cannot understand saw myself 3 or 4 times

True scale wd be better

Magnified X2

These are the pieces of wood with holes through which radicle of Bean passed & exerted trace of 8.80?

[95]

(Used)

Wood with string

The crack was 1.5mm (= .06 .059 inch ) & did not diminish when the root was cut off flush above & below. But on dissecting out the little enclosed cylinder of root the crack went to .7 mm .7 .8mm = 03 31 inch .81 mm. It was then hung so:— [sketch] Depth of Hole .13 of inch & therefore length of strain

and weights put on till the crack increase to about 1.5mm measured by compasses. It required 250 gramms = 8.8 oz After the weighing the crack was again measured and it was .8 mm again Wood was kept damp

Wood without string

Crack before cutting out root = .4 1 mm = .016 inch

after = .2 .008

Weight required 250 gramms = 8.8 oz

The crack was measured in this case with a microscope the weight hanging over a pulley

Depth of Hole .1 of inch