are, perhaps, only varieties depending on the climate, and not specific differences; especially as in places where the seals abound, there are numbers of them found larger and smaller, thicker and thinner, and of different colours according to their sex and age. From a similarity, which appeared at first sight but trivial, and by some fugitive accounts, we were induced to suppose this second seal, or small seal, was the _phoca_ of the ancients. We were informed that the one we had was brought from India, and very probably it came from the Levant. It was an adult, as it had all its teeth. It was about a fifth less than the full-grown seals of our ocean, and about two-thirds less than those of the Frozen Sea, for it was not above two feet five inches in length, while that described by Mr. Parsons was seven feet and a half long, though not arrived at its full growth, as it wanted several teeth. Now the characters given by the ancients of their phoca do not denote so large an animal, but agree with the small seal, which they often compare to the otter and beaver. There is another circumstance mentioned by the ancients as belonging to the phoca, which, though false, could never have been intimated as belonging to our seals, or those of the northern seas. They say that the phoca's hair waves like the sea, and by a natural sympathy follows its motions, lying backward when it flows and forward when it ebbs, and that this remarkable effect remains long after the skin is separated from the animal. Now this could never be attributed to our seals, nor to those of the northern seas, since the hair of both is short and stiff; while, on the contrary, it rather agrees with that of the small seal, which is longer, and of a more supple nature than the hair of the common kind. Besides, Cardan positively asserts, that this property, which had been regarded as fabulous, is found to be a fact in India. Without placing more dependance on this assertion of Cardan's than it deserves, we must allow it indicates that this circumstance belongs to the Indian seal, though possibly it is nothing more than an electric phenomenon, the effects of which the ancients being ignorant might ascribe it to the flowing and ebbing of the sea. However this may be, the above reasons are a sufficient foundation to presume, that the small seal is the phoca of the ancients; and there is also great reason to conclude, that it is the same as that M. Rondelatius calls the _Mediterranean phoca_, the body of which, according to him, is much longer and smaller, in proportion, than our seal. The great seal, described by Mr. Parsons, and which, probably, came from the northern seas, seems to be a different species from the other two, for, notwithstanding it had scarcely any teeth, it was as big again, in all its dimensions, as the common kind. Mr. Parsons, as Mr. Klein judiciously remarks, speaks a great deal on the subject of this animal in a few words, and has given the following observations in