George A. Smith: Sick Kitten (1903)

http://www.brevestoriadelcinema.org/02-il-cinema-delle-origini/
The Sick Kitten is a 1903 British short silent comedy film, directed by George Albert Smith, featuring two young children tending to a sick kitten.
A remake of the director's now-lost The Little Doctor (1901), The Sick Kitten, according to Michael Brooke of BFI Screenonline, "continues the editing technique that he first explored in Grandma's Reading Glass (1900): https://dai.ly/x7598wz
and As Seen Through a Telescope (1900): https://dai.ly/x7598wy
" but, "without the circular black mask to differentiate it," as presumably, "Smith believed that his audience would have grown more sophisticated and would be able to tell the difference between a medium shot and close-up without prompting."
https://en.wikipedia.org/wiki/The_Sick_Kitten