Type: Watercolor and graphite on paper

Diagram demonstrating camouflage principles of bird plumage; original illustration for Concealing Coloration in the Animal Kingdom

Sketch of various birds, including owls and woodpeckers

Sketch of terns feeding in the ocean

Study of a golden angel with two lions and soldiers

Study of two men at war, with the Gods looking down from heaven

Study of a bird, "Galla gladysia"

Studies of a duck, possibly a Baikal teal

Study of three leaves with larvae

Maple leaf – edge larve, sketch

Study of various bird eggs

Study of two naval ships with dazzle camouflage in the fog