. The fishes of India; being a natural history of the fishes known to inhabit the seas and fresh waters of India, Burma, and Ceylon. Fishes. FAMILY, I—SILUEID-,^. 439 In tlie genus Arius and some allied forms tlie males appear to carry the OTa in tteir mouths perhaps until the young are produced.* Many of these fishes are credited with causing poisonous wounds, and we frequently find such cases admitted into hospitals. They may be divided into two classes, (1) those in which the wounds are of a distinctly venomous description, (2) those in which their jagged spines occasion intense inflammatio
. The fishes of India; being a natural history of the fishes known to inhabit the seas and fresh waters of India, Burma, and Ceylon. Fishes. FAMILY, I—SILUEID-,^. 439 In tlie genus Arius and some allied forms tlie males appear to carry the OTa in tteir mouths perhaps until the young are produced.* Many of these fishes are credited with causing poisonous wounds, and we frequently find such cases admitted into hospitals. They may be divided into two classes, (1) those in which the wounds are of a distinctly venomous description, (2) those in which their jagged spines occasion intense inflammation often of a dangerous character. The respiration of these fishes is efEected in two ways, and it may he appropriate here to refer to the amphibious fishes of India, as the LabyrintMei and OpMocephalidce. Respiration in fishes is carried out normally (1) by their using the air which is in solution in the water to oxygenate the blood at their gills, (2) by taking in atmospheric air direct which is employed at a special organ, where it oxygenates the blood, which can be returned for use into the general circulation without its going through the gills, thus constituting true amphibious N^o doubt we observe that fishes which normally oxygenate their blood solely at their gills do rise to the surface in very hot weather, when the water is foul or insufiiciently charged with air and take in air by the mouth. Likewise we find that those which mainly take in atmospheric air direct by the mouth may, to a certam extent, be able to use their gills. _ _ * If fishes having these two different modes of respiration are placed in a globe of water, across which a diaphragm of net is inserted below the surface so as to prevent their obtaining access to the atmosphere, those of the first class which oxygenate their" blood at the gills are unaffected, whereas those which take in air direct, or amphibious fishes, die, due to blood poisoning. If we seek for the reason, we find that t
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