The Journal of experimental zoology . Fixed and Stained Preparations. Fig. 59. Left anterior and right posterior (diagonal) quarter embryos of the i6-cell stage, ventralview. Fig. 60. Left posterior quarter embryo of the 44-cell stage, posterior view. Fig. 61. Right anterior quarter embryo of the 76-cell stage, dorsal view, showing the neural plateand chorda cells of the right side. Fig. 62. Right posterior quarter embryo of about the 180-cell stage, dorsal view {cj. Figs. 7, 8);spurted in the 4-cell stage, fixed 2* hours later, showing 6 muscle and 2 caudal endoderm cells. Fig. 63. Left anter
The Journal of experimental zoology . Fixed and Stained Preparations. Fig. 59. Left anterior and right posterior (diagonal) quarter embryos of the i6-cell stage, ventralview. Fig. 60. Left posterior quarter embryo of the 44-cell stage, posterior view. Fig. 61. Right anterior quarter embryo of the 76-cell stage, dorsal view, showing the neural plateand chorda cells of the right side. Fig. 62. Right posterior quarter embryo of about the 180-cell stage, dorsal view {cj. Figs. 7, 8);spurted in the 4-cell stage, fixed 2* hours later, showing 6 muscle and 2 caudal endoderm cells. Fig. 63. Left anterior quarter embryo, dorsal view; spurted in the 4-cell stage, fixed 5 hours invagination of the ectoderm cells has the appearance of a gastrula, but is probably the invaginationof the neural plate. Fig. 64. Left anterior and right posterior (diagonal) quarter embryos, dorsal view; spurted in the4-cell stage, fixed 5 hours later. Muscle cells are found only in the posterior quarter. Mosaic Development in Ascidian * l^^.
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Keywords: ., bookauthorwi, bookcentury1900, bookdecade1900, booksubjectzoology
