 Palcemonetes solid masses of cells lie upon either side of the cephalic aorta. The dorsal sac is formed by the hollowing out of these masses of cells. Two lateral cavities are thus formed, which are separated by the aorta. The protoplasm of the cells...  Proceedings of the Royal Society of London - Page 340by Royal Society (Great Britain) - 1893Full view - About this book
 | Royal Society (Great Britain) - 1893 - 654 pages
...a solid mass of cells upon either side of the aorta. The dorsal sac is formed by the hollowing out of these masses of cells. Two lateral cavities are...single sac. In the region of the first and second maxillse, all the stages of the process just described may be seen. In the region anterior to this... | |
 | Sir Norman Lockyer - 1893 - 680 pages
...of cells lie upon either side of the cephalic aorta. The dorsal sac is formed by the hollowing out of these masses of cells. Two lateral cavities are...unite ventrally, and so form a. single sac. In the poiterior region of the thorax the central and lateral cavities flre similar to those of the anterior... | |
 | 1893 - 882 pages
...of cells lie upon either side of the cephalic aorta. The dorsal sac is formed by the hollowing out of these masses of cells. Two lateral cavities are...unite ventrally, and so form a. single sac. In the posterior region of the thorax the central and lateral cavities are similar to those of the anterior... | |
 | Sir Norman Lockyer - 1893 - 908 pages
...side of the cephalic aorta. The dorsal sac is formed by the hollowing out of these masses of ceils. Two lateral cavities are thus formed, which are separated...unite ventrally, and so form a. single sac. In the posterior region of the thorax the central and lateral cavities are similar to those of the anterior... | |
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