Larches in blue. “Showing natural engrafting.”
Science-gossip. 1888. Processed image.
Larches in blue. “Showing natural engrafting.”
Science-gossip. 1888. Processed image.
“Different stages in the growth of a bean plant and a pea plant.”
Science problems for the junior high school. 1938.
"Educational poster (showing) a group of mushrooms with the spores that connect them at the bottom. Above are a number of images of cross-sections of the mushrooms and microscopic images of the spores."
Jung-Koch-Quentell Wall Tables. 1963.
“Life cycle of the mushroom.” How and why wonder book of mushrooms, ferns and mosses. 1965.