The mechanistic conception of life : biological essays (1912)
Loeb, Jacques, 1859-1924 · Chicago, Ill. : University of Chicago Press · leaf 101
Fig. 27.—Heteromorphosis in Margelis, a hydroid. At a and 6, where thepoints of stems touch the ground of the aquarium, new roots or stolons grow out. The stem touched the bottom of the dish with the apical ends,a and h. All these ends gave rise to roots. From the upperside of the original root,… … Fig. 28.—Heteromorphosis in Pennaria. A piece a b of this hydroid was cutout and put into a jar with sea-water. The ends a and b touched the bottom of thejar. At both points new roots grew out. glass, later on small polyps grew out. Every place which was in contact with solid bodies gave rise to…
