Research Into The Genre Of Silent Films

I am experimenting with the idea of silent film in Jack. So I decided to do some brief research on short silent films.

These are two Charlie Chaplin films I found...

Charlie Chaplin in "The Immigrant" (1917) 

Smile, Charlie Chaplin , 1936

I found that there is a lot of focus on facial expressions, and actors almost mime their feelings through body language, much like Jack when he finds the photos of people wearing bowler hats.