Download or read book The Annals and Magazine of Natural History, 1922 written by and published by Forgotten Books. This book was released on 2018-02-15 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Annals and Magazine of Natural History, 1922: Zoology, Botany, and Geology Canu and Bassler T say, We repeatedly have to remark that the zoarial form is of no value for generic classification. I certainly cannot go as far as this, and it brings us up against a most important point that requires settlement. It has been established tl1at, in the classification of the Cheilostomata, zooecial characters are more important than zoarial, but in the Cyclostomata the classification has been entirely based on zoarial characters. It is, however, often difficult to decide what is zooecial, what zoarial. In the Cheilostomata as a rule, each zooecium is only in growth-connection w1th its immediate neighbours, and there may be exactly similar zooecia adnate or erect, or placed back to back - as, for example, in Steganoporella and several other genera, - and it took some time before the last generation could agree to their being placed together. Zoarial characters Should, however, be stated in both of the suborders. 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.