Duchenne [Mécanisme] has arrived. Has been testing the photographs with 20 or 30 persons; when all or nearly all agree with Duchenne, CD trusts him. Not one understood the “contracted pyramidal of the nose”. CD does not think the so-called muscle of lasciviousness worth exhibiting.
His MS [of Descent] is so large he may print only what he has, and make a second volume of what he is now writing on expression.
Discusses photographs he would like to have: baby screaming, person in paroxysm of fear.
My dear Sir
Duchenne arrived this morning all safe.f2 The loss of the bookwas beginning to cause me trouble, but I assure you I felt moreannoyment at troubling you so much and so often than at the wantof the book. Considering how hard you are worked and that you havecauses of anxiety, I have more reason to apologise to you, thanyou to me for the accidental hiding of the book and forgetfulnessof your servant. I have just been reading your remarks with verygreat interest: you always tell me exactly the things which I amanxious to hear. I agree with all that you say, and am particularlypleased at your remarks on the pyramidal of the nose and the so-calledmuscle of lasciviousness. I believe it to be all fancy.f3 In order totest Duchenne’s plates I have shown the most characteristic (hidingany indication of what they were meant to express) to between 20 and30 persons of all kinds, and have recorded their answers: when allor nearly all agree in their answer, I trust him.f4 Now, I believe,not one person understood the supposed meaning of the contractedpyramidal! As for the lascivious muscle, I did not think it worthexhibiting. I have been very glad to see the photograph of the womanwith bristling hair: I suppose I might, if I wished, have a wood-cutfrom it: she looks like a Papuan.f5 You propose to send me a photographof a case of “general paralysis of the insane”, and I should bevery glad to see it: I have been trying to get a London Photographerto make me one of a young baby screaming or crying badly; but I fearhe will not succeed.f6 I much want a woodcut of a baby in this state.I presume it will be hopeless, from constant movement, to get an insaneperson photographed, whilst crying bitterly. Should you ever have timeto send me any more notes, I can assure you that they are fullyappreciated by me. My present book has grown so large, that I am goingto take the MS. to London to see how big a book it will make; andperhaps I shall print this first, and retain what I am now writingon expression for a separate essay, which I will print as soon asI have got the rest of my MS. printed off.f7 To return to the Photographs;if ever you get one of a person in a paroxysm of fear or horror, I shouldmuch like to see it. Have you ever noticed whether the alæ of thenostrils are then raised or distended? With the most sincere thanksfor all your assistance, I remain
My dear Sir | yours very faithfully | Ch. Darwin
Heaven only knows whether my essay will be worth the trouble whichI have caused to many of my kind friends.