whether in after years they rarely or never frown. If it should prove true
that infants born blind do not contract their orbicular muscles whilst
screaming (though I can hardly believe it) it would be interesting to know
whether they shed tears as copiously as other children. The nature of the
affection which causes blindness may possibly influence the contraction of
the muscles, but on all such points you will judge infinitely better than I
can. Perhaps you could get some trustworthy superintendent of an asylum
for the blind to attend to this subject. I am sure that you will forgive
me asking this favour.


LETTER 476. TO D. HACK TUKE.
Down, December 22nd, 1872.

I have now finished your book, and have read it with great interest.
(476/1. "Influence of the Mind upon the Body. Designed to elucidate the
Power of the Imagination." 1872.)

Many of your cases are very striking. As I felt sure would be the case, I
have learnt much from it; and I should have modified several passages in my
book on Expression, if I had had the advantage of reading your work before
my publication. I always felt, and said so a year ago to Professor
Donders, that I had not sufficient knowledge of Physiology to treat my
subject in a proper way.

With many thanks for the interest which I have felt in reading your work...


LETTER 477. TO A.R. WALLACE.
Down, January 10th [1873].