Will supply CD with information "as far as my knowledge extends".

Suggests CD visit him.

Is pleased CD approved of his effort ["Address in surgery", see 5219] in which he alluded to CD’s views.

Supposes that infants’ eyes bulge and become engorged with blood during fits of sneezing or screaming, but doubts Charles Bell’s experiment of opening and observing eyes turn from pale to red [Anatomy and philosophy of expression (1844)].

Discusses the action of the eye when looking at distant objects.

Thanks CD for the gift of his new work [Variation].

Asks for precise reference in Charles Bell to subject of CD’s question. Agrees to assist CD’s investigation. Asks about Bell’s observations on eyes engorged with blood. Has noticed that eyes of children with excessive photophobia tend to be pale when forced open.

Asks whether he may come with F. C. Donders to visit CD.