Excerpt from The Odontographic Journal, 1884, Vol. 4
Protoplasmic contraction may be especially influenced - similarly to the movements of muscles and other excitable formations, and outside of the normal physiological irritants, - or may be produced, through many forms of external encroachments, the so called Artificial Irritants. These irritants are essentially the same as for other excitable formations. In general every disturbance of the molecular equilibrium acts as an irritant if it takes place with a certain degree of rapidity and reaches above a certain amount. But above all come electric shocks, changes of temperature, and mechanical and chemical trespasses. The amount or degree of irritability is measured by the weakest yet still potent irritant, and varies according to the form of the protoplasm, the irritation, and other existing conditions. The protoplasm of fresh water amoebae, diatomes and cells of valisneria re-act better after a very weak induction current than does the white blood corpuscle.
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. Это и многое другое вы найдете в книге The Odontographic Journal, 1884, Vol. 4 (Classic Reprint)