Regeneration . pposed, apparently, by Goebel, to depend on the usefulness, ornon-usefulness, of the regenerative act! Brefeld has described several cases of regeneration in is produced from the zygospore of Miicor miicedo a germinat-ing tube that forms at its end a single sporangium. If the tube isdestroyed or injured, a second one is formed from the zygospore, andif this is injured a third time, a new tube is produced. Each timethe sporangium is smaller than in the preceding case. If the spore-bearing stalk of Copritius stercoraritis is cut off, the ?• Goebel, 98, page 37. REGENE
Regeneration . pposed, apparently, by Goebel, to depend on the usefulness, ornon-usefulness, of the regenerative act! Brefeld has described several cases of regeneration in is produced from the zygospore of Miicor miicedo a germinat-ing tube that forms at its end a single sporangium. If the tube isdestroyed or injured, a second one is formed from the zygospore, andif this is injured a third time, a new tube is produced. Each timethe sporangium is smaller than in the preceding case. If the spore-bearing stalk of Copritius stercoraritis is cut off, the ?• Goebel, 98, page 37. REGENERATION IN PI A NTS S7 end grows out and produces a new sporangium. If pieces of thestem are cut off and placed in a nourishing medium, they producefrom the ends a new myceHum, and from this new erect hyphae maydevelop. In the former case, the cut-end regenerates the partremoved in somewhat the same way that an animal regenerates at thecut-end; in the latter, there is a return to the mycelium stage, as in i^. ,M!if <^^_ <^ V
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