Another migrating fish was found by thousands in the ponds and all the fresh waters of Carolina, by Bosc; and as these pools are subject to be dry in summer, the Creator has furnished this fish, as well as one of the flying ones, by means of a membrane which closes its mouth, with the faculty of living out of water, and of travelling by leaps to discover other pools. Bosc often amused himself with their motions when he had placed them on the ground, and he found that they always direct themselves towards the nearest water, which they could not possibly see, and which they must have discovered by some internal index; during their migrations they furnish food to numerous birds and reptiles. They belong to a genus of abdominal fishes, and are called swampines. It is evident from this statement that these fishes are both fitted by their Creator not only to exist, but also move along out of the water, and are directed by the instinct implanted by Him to seek the nearest pool that contains that element; thus furnishing a strong proof of what are called compensating contrivances; neither of these fishes have legs, yet the one can walk and the other leap without them, by other means with which the Supreme Intelligence has endowed it. I may here observe that the serrated bone, or first ray of the pectoral fin, by the assistance of which the flat-head appears to move, is found in other Siluridans, which leads to a conjecture that those may sometimes also move upon land. Another fish found by Daldorf in Tranquebar, not only creeps upon the shore, but even climbs the Fan palm in pursuit of certain Crustaceans which form its food. The structure of this fish peculiarly fits it for the exercise of this remarkable instinct. Its body is lubricated with slime, which facilitates its progress over the bark, and amongst its chinks; its gill-covers are armed with numerous spines, by which, used as hands, it appears to suspend itself; turning its tail to the left, and standing as it were on the little spines of its anal fin, it endeavours to push itself upwards by the expansion of its body, closing at the same time its gill-covers, that they may not prevent its progress; then expanding them again, it reaches a higher point: thus, and by bending the spiny rays of its dorsal fins to the right and left, and fixing them in the bark, it continues its journey upwards. The dorsal and anal fins can be folded up and received into a cavity of the body.