Archiv fur Entwickelungsmechanik der Organismen, 1859, Vol. 8

Archiv fur Entwickelungsmechanik der Organismen, 1859, Vol. 8

143253435
1887.6956 руб.
Добавить в корзину
Описание
Excerpt from Archiv fur Entwickelungsmechanik der Organismen, 1859, Vol. 8: Mit 20 Tafeln und 128 Textfiguren

The regenerating pieces were kept in small Stender dishes be hind a window where they were never exposed to direct sunlight. Bacteria and fungi are the worst enemies of the regenerating Hydras. At first, water distilled in glass vessels was used, but later it was found that tap water gave equally good results. The Hydras them selves were the principal source of contamination of the water. Consequently those from the aquarium were washed once or twice by means of a gentle current of water directed upon them from a pipette before they were operated upon. It was found that the fewer the animals placed in the same Stender dish, the less like were fungous growths to appear; not more than six should be kept together. The water was changed about every other day and the dishes thoroughly cleansed. The larger fungous growths, which especially encumbered the tentacles, were removed by means of a needle and a current of water from a pipette. Hypotricha were frequently found wandering about over the surface of a Hydra. One Hydra, when taken from the aquarium, had three such companions, which were allowed to remain. Two days later, this Hydra was perfectly clean, although fungi had appeared in the water and upon Hydras which had been placed in other dishes at the same time. These conditions were noted in several cases.

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.