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.