To deepen his analysis, he used lampblack to
dim the reflective luster of a dark horse’s coat, and
photographed the trajectories made by small white pieces of
paper, each one a different shape, that he had glued to each of
its joints.
Marey's belief in the identity of the laws that governed animate
and inanimate nature and his desire to demonstrate the
universality of chronophotography as a method of scientific
analysis prompted him in 1886 to compile a sort of illustrated
mechanics: pictures of balls, of disks and of batons falling
from one point to another or curving in parabolas across the
black hangar.