div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: · embryonal rudiment was visible In the course of the day the blastoderm border proceeding over the surface of the yolk contracted gradually assuming at last a very elongated src=https:reader034fdocumentsusreader034viewer20220422175ec1cce1862bcb22a64c9455html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: · embryonal rudiment was visible In the course of the day the blastoderm border proceeding over the surface of the yolk contracted gradually assuming at last a very elongated src=https:reader034fdocumentsusreader034viewer20220422175ec1cce1862bcb22a64c9455html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: · embryonal rudiment was visible In the course of the day the blastoderm border proceeding over the surface of the yolk contracted gradually assuming at last a very elongated src=https:reader034fdocumentsusreader034viewer20220422175ec1cce1862bcb22a64c9455html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: · embryonal rudiment was visible In the course of the day the blastoderm border proceeding over the surface of the yolk contracted gradually assuming at last a very elongated src=https:reader034fdocumentsusreader034viewer20220422175ec1cce1862bcb22a64c9455html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: · embryonal rudiment was visible In the course of the day the blastoderm border proceeding over the surface of the yolk contracted gradually assuming at last a very elongated...