Excerpt from Quarterly Journal of Microscopical Science Johnston (4) erroneously regarded the brain as a double heart, the longitudinal nerve-stems as vessels. Several later authors have fallen into the same error. Rathke (5) carefully avoided it and describes the median and the two lateral longitudinal vessels of Linens. Quatrefages (7) in his Splendid treatise on this group of worms has given an accurate description of the circulatory system of certain Hoplonemertea. He, however, too peremptorily looked upon this ...
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Excerpt from Quarterly Journal of Microscopical Science Johnston (4) erroneously regarded the brain as a double heart, the longitudinal nerve-stems as vessels. Several later authors have fallen into the same error. Rathke (5) carefully avoided it and describes the median and the two lateral longitudinal vessels of Linens. Quatrefages (7) in his Splendid treatise on this group of worms has given an accurate description of the circulatory system of certain Hoplonemertea. He, however, too peremptorily looked upon this description as applying to all Nemertea, whereas most considerable differences Obtain in the other groups. However, his figures have found their way into most Of the text-books of zoology as correctly illustrating the vascular system of the Nemertea indiscriminately. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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