расширенный поиск

Книга по требованию: The Monthly Microscopical Journal, Vol. 14

Товар № 11455711

Transactions of the Royal Microscopical Society, and Record of Histological Research at Home and Abroad (Classic Reprint)

Вес: 0.54 кг.
Год издания: 2015
Страниц: 342 Переплет: мягкая обложка
Товар отсутствует
Узнать о поступлении

Excerpt from The Monthly Microscopical Journal, Vol. 14: Transactions of the Royal Microscopical Society, and Record of Histological Research at Home and Abroad

For its examination a power of five or six hundred is desirable, although its general features may be studied with a 4/10ths objective. Its surface is studded with considerable regularity by minute, upstanding, firm elevations resembling cells, but apparently quite structureless. Beneath this layer and looking like a changed condition of its deepest part, are granules of uniform size and symmetrical arrangement, in rows corresponding with and transverse to the longitudinal axis of the body; the latter being most marked, gave a striated appearance, reminding one of striped muscle; at other times by a slight alteration the resemblance to the markings of a Pleurosigma was most striking. Beneath this layer is a thin. structureless membrane, by a reflexion of which a space near the mouth is cut off from the main body; this space, together with the general interior of the creature, is occupied by a granular protoplasmic substance mixed with clear droplets. The mouth has three lips, and leads into a slight depression or pharynx, often deepened by retraction into the space above mentioned. On the middle of the ventral surface is an oval sucker, in size about a third the diameter of the body: transverse striation is very distinct in its central depressed part. Behind the sucker a clear, elongated, curved space was frequently seen in the interior of the body, which space, after remaining some time, appeared suddenly to collapse. On the dorsal surface a little in front of the sucker was situated a somewhat stellate space, over which the surface of the body was depressed. These spaces perhaps represent a rudimentary water-vascular system. Near the sucker, in all specimens examined, were three minute spherical concretions of unequal size, moving freely in the general substance; they were the only parts that showed double refraction under polarized light, under which they were very conspicuous. On the under surface near the mouth was an elevation with a notch at its posterior margin; at the attached end close to the spheres were two diffused masses of greater opacity and granularity.

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.

Эта книга будет изготовлена в соответствии с Вашим заказом по технологии Print-on-Demand компанией ООО «Книга по Требованию». Print-on-Demand - это технология печати книг по Вашему заказу на цифровом типографском оборудовании. Книга, произведенная по технологии Print-on-Demand (POD) представляет собой классическую печатную книгу с соблюдением всех стандартов качества, от офсетной бумаги и плотного картона до качественного клея, используемого при изготовлении. Черно-белая текстовая или полноцветная иллюстрированная книга (в зависимости от исходного файла, подготовленного к печати) может быть изготовлена в разных вариантах: - в мягкой обложке (Клеевое Бесшвейное Скрепление); - скрепление скобой (для книг с небольшим количеством страниц); - в твердом переплете с клееным текстовым блоком; Материалы, используемые при производстве книги: - бумага текстового блока - офсетная (белая или кремовая) 80 г/м2 - мягкая обложка - бумага мелованная 250 г/м2; - ламинация обложки - матовая или глянцевая; - твердый переплет - картон 2 мм, каптал, белые форзацы, прямой корешок - сверхпрочный полимерный клей; - каждая книга упакована в термопленку. Каждый заказ обрабатывается в индивидуальном порядке: каждой книге, напечатанной по технологии Print-on-Demand, присваивается уникальный номер.

Читать далее