. Contributions from the Osborn Botanical Laboratory. Plants. 8 Hooker: Physiological observations half after stimulation movement was detected, whereupon the fly-leg was removed. After fifteen minutes the tentacle was well bent and the gland had moved through an angle of about fifty degrees. Marked elongation took place on the convex side near the base in Segment 6, and to a lesser extent in Segment 5. The concave side remained nearly of the same length as before. The region of bending is coincident with the region of elongation on the. Fig. I. Side views of a tentacle in the process of bendi
. Contributions from the Osborn Botanical Laboratory. Plants. 8 Hooker: Physiological observations half after stimulation movement was detected, whereupon the fly-leg was removed. After fifteen minutes the tentacle was well bent and the gland had moved through an angle of about fifty degrees. Marked elongation took place on the convex side near the base in Segment 6, and to a lesser extent in Segment 5. The concave side remained nearly of the same length as before. The region of bending is coincident with the region of elongation on the. Fig. I. Side views of a tentacle in the process of bending, X 22. a, before stimulation; b, c and d, successive stages of inflexion; e, the fully bent tentacle. convex side. As the tentacle continued to bend, the area of curvature and elongation was extended upward toward the gland, including Segments 4, 3, and 2, and to a lesser extent downward so as to include a portion of Segment 7. In the ultimate stage the curved region subtended an angle of approximately 215 degrees. Both sides increased in length, but the increase of the convex side was eight times that of the concave. Fig. i is a series of camera lucida drawings made during the inflexion of this tentacle. In b the bending region is seen to be restricted at first to the lower end and to extend apically in c and d. The final. 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 Osborn Botanical Laboratory. [New Haven?] Osborn Botanical Laboratory, Yale University
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Keywords: ., bookcollectionbiodiversity, bookcollectionnyb, booksubjectplants
