Journal of experimental zoology . 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 t
Journal of experimental zoology . 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. 451 STUDIES ON INHERITANCE IN PIGEONS II. A MICROSCOPICAL AND CHEMICAL STUDY OF THE FEATHER PIGMENTS^ ORREN LLOYD-JONES Iowa State College of Agriculture, Ames, Iowa SIXTY-THREE FIGURES—SEVEN PLATES CONTENTS Introduction 1. Method of genetics 454 2. Granular nature of melanin pigments 455 3. Origin of pigment in feathers 456 4. Materials and methods 457 Experimental findings 1. Red color of pigeons 400 a. Distribution of red pigment in the feather 460 b. Granule form 462 c. Plum color 462 d. Development of red pigment 463 2. Yellow 464 a. Nature and distribution of the pigment 464 b. Granule form 465 c. Development 466 3. Black 466 a. Nature of the pigment J66 b. Distribution 467 c. Granule form 467 d. Development 468 4. Dun 470 a. General 470 b. Dun color in other birds -^70 c. Development 471 o. Blue 471 a. Nature of blue color in birds 471 b. Distribution of the pigment 472 c. Granule form 474 d. Development 474 Papers from the Department of Experimental Breeding of the Wisconsin
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
