[Illustration: STROBILOMYCES STROBILACEUS.] [Sidenote: =Black spore-prints=] A reproduction of one of these prints is shown in Plate 38, the white reticulation representing the contact of the tube orifices with the paper, each tube depositing its dot composed of spores, the depth of color increasing in proportion to the time involved in the deposit. A single mushroom will yield a half-dozen or more prints. This fungus dries readily, and may be kept indefinitely.