. Birds of other lands, reptiles, fishes, jointed animals and lower forms;. Zoology; Birds; Reptiles; Fishes. Photo by W. SuvtlU-K/nt, /â .Z. AUSTRALIAN LUNG-FISH Thii Jiih is aUo kiwivn jj the Bumcit Ri'ver Salmon iMii/ora-on-S^. BOOK IV. FISHES CHAPTER I LUNG-FISHES JXD BV W. F. PVCKAFT, ,.S., THOUGH amongst the lowest of the backboned animals, the Fishes are ne\-ertheless an exceedingl)' interesting gronp, distinguished from all others by the possession of fins, which are di\-isible into two scries, â an unpaired, ranged along the middle of the back and abdomen, and
. Birds of other lands, reptiles, fishes, jointed animals and lower forms;. Zoology; Birds; Reptiles; Fishes. Photo by W. SuvtlU-K/nt, /â .Z. AUSTRALIAN LUNG-FISH Thii Jiih is aUo kiwivn jj the Bumcit Ri'ver Salmon iMii/ora-on-S^. BOOK IV. FISHES CHAPTER I LUNG-FISHES JXD BV W. F. PVCKAFT, ,.S., THOUGH amongst the lowest of the backboned animals, the Fishes are ne\-ertheless an exceedingl)' interesting gronp, distinguished from all others by the possession of fins, which are di\-isible into two scries, â an unpaired, ranged along the middle of the back and abdomen, and including the tail-tin; and a paired series, representing the fore and hind limbs of land animals. The bod\' is either clothed with scales or naked, and, being perfectl}' sustained b}- the water, needs no support from the fins, which ser\'e as balancing-organs. In the brillianc)' and beaut}' of their coloration fishes display a variety that cannot be excelled by an)- other animals. Furthermore, the coloration is often rendered still more beautiful from the fact that it can undergo rapid changes of hue. Frequenth' this Cdloration is of a protecti\'e character, causing the fish to harmonise with its surroundings, and so escape the observation of its enemies. The colours of li\'ing fishes can only, for the most part, be indicated in the present pages when a pattern by the formation of stripes or spots; but the wonderful \'ariations in the form of the bod)- will probabh' pro\'e a revelation to mam-. Lung-fishes The Lung-fishes are a peculiarly important group, inasmuch as they form a connecting- link between the class Fishes and the land-dwelling Amphibians â the class containing the Frogs and Toads and their allies. They are accorded this position mainly because, like Amphibians, they possess true lungs, wdiich almost entirely replace the gills, the breathing- organs of other fishes. One of the best known of the lung-fishes is the Barr.\munI)I, or LuxG-FiSH
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Keywords: ., bookcentury1900, bookdecad, booksubjectfishes, booksubjectzoology
