To James Crichton-Browne 2 November 1
My dear Sir
I have some reason to believe, but have found it extremely difficult to get observations made, that the Platysma is very apt to contract during a rigor or shivering fit.2 If you have ever the chance to observe a patient in this state, will you kindly observe the muscle. I am just recommencing on my essay on Expression.3
Yours very sincerely | Ch. Darwin.
Asks JC-B to observe whether platysma muscle contracts during rigor or shivering fit.
Is just recommencing his essay on expression.