Dear Father
I was going to work those things tonight but I am afraid I have hopelessly mislaid the paper on which I had copied the figures. Would you send them by post. I have written to Abney.2
Your affec son | Leonard Darwin
If not very expensive shall I get a little glass case made about 12 in cube or shall you wait till you see if you experiment succeeds.3
Please cite as “DCP-LETT-9196,” in Ɛpsilon: The Charles Darwin Collection accessed on