Archive image from page 131 of The development of the chick. The development of the chick : an introduction to embryology . developmentofchi02lill Year: 1936 h t iC- -au. ep. Fig. 65. — Embryo of 12 s, from above, drawn in alcohol with re- flected light, au. ep., Auditory epithelium. Other abbreviations as before, to 25 somites; and then the mark was found to coincide with the first somite of the series. In the next place it was possible by similar means to mark out the topography of the embryonic head in the stage of one or two somites. Thus it was determined that a mark ma

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Archive image from page 131 of The development of the chick. The development of the chick : an introduction to embryology . developmentofchi02lill Year: 1936 h t iC- -au. ep. Fig. 65. — Embryo of 12 s, from above, drawn in alcohol with re- flected light, au. ep., Auditory epithelium. Other abbreviations as before, to 25 somites; and then the mark was found to coincide with the first somite of the series. In the next place it was possible by similar means to mark out the topography of the embryonic head in the stage of one or two somites. Thus it was determined that a mark made immediately in front of the first somite formed appeared later in the region of the otocyst;

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