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At N.S. Gracia, on the north side of the Inner Narrows of the Strait of Magellan, I found on the summit of a cliff, 160 feet in height, shells of existing Patellae and Mytili, scattered on the surface and partially embedded in earth. On the eastern coast, also, of Tierra del Fuego, in latitude 53 degrees 20' south, I found many Mytili on some level land, estimated at 200 feet in height.

I did not doubt until lately that this mould was of purely terrestrial origin, when with a microscope examining some of it from the inside of a Concholepas from the height of about one hundred feet, I found that it was in considerable part composed of minute fragments of the spines, mouth- bones, and shells of Echini, and of minute fragments, of chiefly very young Patellae, Mytili, and other species.

Observe the patellae with what tenacity they cling to save themselves from being washed into the deep water, and being devoured by the fishes that are playing in its chasms! What a source of endless amusement, what a field for deep reflection, is there in the investigation of this one little rock!

He was almost completely exhausted, and, after thawing the ice from his clothes, stockings, and boots, which had not been removed since December 13th, it was found that both hands and forearms were completely mortified up to the middle third, and both feet and legs as far as the upper third; both knees over and around the patellae, and the alae and tip of the nose all presented a dark bluish appearance and fairly circumscribed swelling.

From its mineralogical character, from the number and size of the embedded fragments, and from the abundance of Patellae, and other littoral shells, it is evident that the whole was accumulated in a shallow sea, near an ancient coast-line. These effects are very curious.

I will now present the following cases which have seemed of special interest to me: CASE FIRST. In 1874, while in the mountains on the Trinity river, Dr. was kicked by a mule in such a manner as to rupture the ligamentum patellae. The tendon of the quadriceps femoris, at once drew the patella at least two inches above its normal position.

Great beds of mussels, patellae, and chitons still adhering to the rocks were upraised above high-water mark; and some acres of a rocky flat, which was formerly always covered by the sea, was left standing dry, and exhaled an offensive smell, from the many attached and putrefying shells. It appears from the researches of Captain Fitzroy that both the island of St.