Contributions To Embryology Vol 11 No 49 55 PDF Download

Excerpt from Contributions to Embryology, Vol. 4: Nos. 10, 11, 12, 13 A condition similar to that found in the Peters specimen has been observed bv Lewis in the Herzog specimen, which is of about the same stage of development. Lewis says (see his paper, p. 300) that there are occasional clefts in the mesoderm of the chorion of the Herzog embryo, but that they are of doubtful significance. His reconstruction shows a strand of mesoderm, more pronounced than in the Peters ovum, extending from the yolk-sac to the chorion and circumscribing a space on the ventral side of the embryo. Eternod has written several papers in which he describes the formation of the exocoelom and the fate of the magma reticule. He says that it first fills the entire space between the primordium of the embryo and the chorionic wall. Later, larger spaces appear within the substance of the magma, leaving denser strands of magma fibrils to support the embryo within the gradually expanding chorion. In general this coincides with the opinions just cited. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."