Darwin, E. A. to Darwin, C. R.
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Proposes a dry place for the apparatus for their laboratory and draws a plan for CD's criticism.
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Price has found black sediment in his tea, which was attracted to a magnet.
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Transcription
[Cambridge] -- -- %%SN [DIAG] My dear Bobby.
I have been indulging myself in the pleasure of scheming, & I here send you the
fruits of it. The Lab:, as we know to our cost, wants a dry place to keep our apparatus
in, and the above drawing is a plan for that purpose, but from not remembering the
dimensions I have been obliged to draw it by my eye, & not by any scale. A.A you
must understand are the chimneys as they now stand, & I propose under the arch
to open a window looking into the drying yard, this is represented at C. Next,
to inclose a small space sufficient to sit or turn round it with lath & plaster.
I should put the laths double with a space between of one or two inches as figured at
B,B. I have drawn the door at D, which I make as narrow as possible, &
perhaps double like a Rumford ash-door (wh. you may see in y
I have drawn this with dotted lines, those on each side may be either shelves or drawers.
Go to the Lab. with a rule in your hand & consider about it, & let me know what you think.
Price in drinking tea observed a black heavy sediment constantly form, & by degrees he collected a small pill box full. He gave me a few grains to examine, & I found it be entirely attracted by the magnet. Is not this curious? We are going to try how much per cent is in the tea, & then send it to Children (Editor of An. of Phil.) to examine it & what else he may please to do.
I wish when you write you would send me a piece of Plat. Wire. Put it in the fold of the first page & gum it fast & I dare say it will pass muster with the post office—
Good Bye. Let me hear soon | yours, E. D.
N.B. Keep the plan at all events.
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John George Children.