Excerpt from Zoology and Food FishesRunning along the side of the body is a streak, called by Zoologists the lateral line it is a highly modified structure of the nature of an organ of sensation, and in all probability plays a more important part in the economy of the animal than is at present imagined. Coming now to the head, the large eyes are clearly visible, and midway between these and the tip of the snout there is seen on either side an aperture, which upon close inspection is found to be divided into two by an oblique fold of skin, this is the external nostril and leads into the nasal chamber. There are no true eyelids present, but the skin is produced into a couple of transparent folds, which lie in front of and behind the eye respectively.The only remaining parts in the living animal to be noted within the scope of these pages, are those concerning its respiration. The fish, in common with all living things, plant or' animal, must have air, and as this is held in solution in the water, much as we should hold water in a sponge, the fish gets it by swallowing and squeezing, so to speak, the surrounding medium.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.