. Fundamentals of botany. Botany. 2S8 STRUCTURE AND LIFE HISTORIES The protoplasm appears to be streaming in a constant current in one direction, and this is thought to be due to the evaporation of water from surfaces more exposed to the air, and the intake of more water from the substratum, by Fig. 185.—Bread mold [Rhizopus nigricans). A, older plant; myc, mycella; sph, sporangiophore; sp, sporangium; st, stolon produced by A, and giving rise at its tip to a new plant, B. Greatly enlarged. 251. Secretion of a Powerful Poison.—In ^the course of some experiments, made in order to dete
. Fundamentals of botany. Botany. 2S8 STRUCTURE AND LIFE HISTORIES The protoplasm appears to be streaming in a constant current in one direction, and this is thought to be due to the evaporation of water from surfaces more exposed to the air, and the intake of more water from the substratum, by Fig. 185.—Bread mold [Rhizopus nigricans). A, older plant; myc, mycella; sph, sporangiophore; sp, sporangium; st, stolon produced by A, and giving rise at its tip to a new plant, B. Greatly enlarged. 251. Secretion of a Powerful Poison.—In ^the course of some experiments, made in order to determine the cause of sex in the mucors, Blakeslee and Gortner in- jected into the ear of a healthy rabbit some of the juice, squeezed out of the mycelium of Rhizopus nigricans. To their great surprise the animal died almost instantly, before the injection was completed. Further experi- ments clearly demonstrated that Rhizopus contains a powerful poison (or toxin), which is soluble in water, but which produces its effect only when introduced into the circulatory system. When this expressed juice was fed to the rabbits, or when they ate the mycelium, no. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookauthorgag, bookcentury1900, bookdecade1910, booksubjectbotany
