From William Marshall to Horace Darwin [21 April 1873]

Dear Darwin

Thanks for y^r. letter. I expect to be in cambridge for 4 or 5 days some time in May but can't settle the day yet. I am very glad London suits you, it is easier to go there than to Cannes.

My business here goes on as before  I have only varied my time by going off to see Tintern Abbey on Easter Sunday.

Can you conceive any reason for moths w^h. flourish during the winter having the scales on their wings much thinner than most moths; this seems to be so & I don't see the reason for it.

Let me know if any alteration or addition to y^r. plans takes place.

How is Bradshaw? Is Muggeridge up & does he flourish? | Y^rs. very truly | b

P.S. Please thank Frank Balfour for ordering a microscope for me & say it suits me to a T.