10. _Portland, Cumberland County._—In the American Naturalist, volume XII, 1878, page 633, it is recorded that the larger part of the skeleton of a walrus, including the skull, with tusks over 5 inches long, had lately been found in the Quaternary clays at Portland. It had been discovered by workmen excavating for the foundation of the transfer station of the Boston and Maine Railroad. The remains were partially embedded in a layer of blue clay a foot thick, itself overlain by 2 feet 2 inches of a lighter clay. The latter contained casts and shells of 11 species of mollusks. J. A. Allen, in his work already quoted, states that the skeleton was found at a depth of 7 feet. It was placed in the museum of the Portland Society of Natural History, and is still there, as reported by the curator, Arthur H. Norton. Mr. Norton has sent the writer an extract from the report of the committee which investigated this discovery. The bed of blue clay in which the greater part of the skeleton was buried contained the following species of mollusks: _Mya arenaria_, _Macoma sabulosa (calcarea)_, _Mytilus edulis_, _Cardium (Serripes) grœndlandicum_, _Saxicava distorta_, _Nucula antiqua_, _Leda tenuisulcata_, _L. truncata (Yoldia glacialis)_, _Natica clausa_, _N. pusilla_, and _Astarte striata_. The lighter-colored clay above the blue clay was more sandy and adhered strongly to the bones. This clay contained _Mya arenaria_, _Mytilus edulis_, _Serripes grœndlandicus_, _Astarte striata_, _Macoma calcarea_, _Nucula antiqua_, _Natica_, and _Balanus_. Above the lighter-colored clay just mentioned was a foot of a clay which contained wood and roots, the unused portion of the brick clay that once existed there, but which had been removed for the manufacture of bricks. Inasmuch as the clay overlying the bed in which the remains were found contains marine shells, it is certain that since their deposition the land has been considerably elevated. George N. Stone (Monogr. XXXIV, U. S. Geol. Surv., pp. 286–291) has discussed the age of the glacial deposits at Portland. Professor M. L. Fuller has written to the author that on the Maine coast the chief clay is known as the Leda and is found at Portland and Gardiner, and that it probably antedates the Wisconsin. This is not to be correlated with the Leda clay of the St. Lawrence Valley. It corresponds rather to Clapp’s “high-level clays” (Bull. Geol. Soc. Amer., vol. XVIII, p. 505, seq.). NEW HAMPSHIRE.