Sharks appear to have become of late years much more numerous in Faroe, as they have also in other parts of the North Seas, especially on the coast of Norway. The reader may, probably, have found on the sea-shore certain cases, which are fancifully called sea-purses, Mermaids' purses, &c. Now, some Sharks bring forth their young alive, whilst others are enclosed in oblong semi-transparent, horny cases, at each extremity of which are two long tendrils. These cases are the above _purses_, which the parent Shark deposits near the shore in the winter months. The twisting tendrils hang to sea-weed, or other fixed bodies, to prevent the cases being washed away into deep water. Two fissures, one at each end, allow the admission of sea-water; and here the young Shark remains until it has acquired the power of taking food by the mouth, when it leaves what resembles its cradle. The young fish ultimately escapes by an opening at the end, near which the head is situated. California has yielded an extraordinary novelty in fish history. In 1854 Mr. Jackson, while fishing in San Salita Bay, caught with a hook and line a fish of the perch family _containing living young_. These were supposed to be the prey which the fish had swallowed, but on opening the belly was found next to the back of the fish, and slightly attached to it, a long very light violet bag, so clear and transparent that there could already be distinguished through it the shape, colour, and formation of a multitude of small fish (all facsimiles of each other), with which the bag was filled. They were in all respects like the mother, and like each other; and there cannot remain a single doubt that these young were the offspring of the fish from whose body they were taken; and that this species of fish gives birth to her young alive and perfectly formed, and adapted to seek its own livelihood in the water. Professor Agassiz has confirmed the truth of this extraordinary statement by a careful examination of the specimens, and has ascertained that there are two very distinct species of this remarkable type of fishes.