Journal of experimental zoology . 447 PLATE -2 OF FIGURES Rana sylvatica larvae 7 Larva witli a ficshy, partly membranous projection in an anterior ventro-lateral position. 8 Embryo with a ventral projection arising from the lateral muscle plateon the left side and destined to become a tail. 9 Larva with a ventral tail (keeled on one side only) arising from the rightlateral muscle jilate. 10 Larva (upper figure) with two accessory tails, one arising from each lateralmuscle plate and projecting ventrally. 448 ABNORMALITIES PRODUCED BY CENTRIFUGING A. M. UANTA AXD U. A. GORTNBR PLAT
Journal of experimental zoology . 447 PLATE -2 OF FIGURES Rana sylvatica larvae 7 Larva witli a ficshy, partly membranous projection in an anterior ventro-lateral position. 8 Embryo with a ventral projection arising from the lateral muscle plateon the left side and destined to become a tail. 9 Larva with a ventral tail (keeled on one side only) arising from the rightlateral muscle jilate. 10 Larva (upper figure) with two accessory tails, one arising from each lateralmuscle plate and projecting ventrally. 448 ABNORMALITIES PRODUCED BY CENTRIFUGING A. M. UANTA AXD U. A. GORTNBR PLATE 2. 449 PLATE 3 KXPLAXATIOX OF FIGURES Ainbl\stonia punetatuin larvae 11 Xorinal Amblystoma punctatum larva. 12 Virtually headless larva, from a centrifuged egg of the same clutch asfigiu-c 11. The arrows beside figures 11 and 12 indicate corresponding levels onthe two larvae. 13 Normal larva, younger than ones shown in figures 11 and 12. 14 Larva from the same clutch of eggs as figure 13 but from an egg centri-fuged while in the early gastrula stage; while this larva has the head betterdevelopeil than in figure 12 it lacks the ejes and other organs belonging to theanterior head region. The arrows indicate corresponding body levels in figures13 and 14. 450 ABNORMALITIES PRODUCED BY CENTRIFUGING A. M. BANTA AND R. A. GORT>rER PLATI-: 3
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
