My dear Lubbock
I beg a million pardons. Abuse me to any degree but forgive me— it is all an illusion (but almost excusable) about the Bees.2 I do so hope that you have not wasted any time for my stupid blunder.— I hate myself I hate clover & I hate Bees—
In Haste to catch evening post | Yours sincerely | C. Darwin
The text in OP’s post is the copied transcript of the letter (including the random number 2 used for citation). It contains no commas and uses an ampersand.
Maybe he wasn’t a fan of any commas.