Mr. Southall, in “Recent Origin of Man,” p. 475, quotes, from Dr. Andrews, of Chicago, to the effect that these calculations are very erroneous, as he thinks that M. Morlot forgot that the size of the cone would increase more and more slowly. On the contrary, M. Morlot says as follows: “Only this growth must have gone on at a gradually diminishing rate, because the volume of a cone increases as the cube of its radius. Taking this fact into consideration, etc.” (Smithsonian Report, 1860, p. 341.) There are, however, several objections to this calculation, for which see Lubbock’s “Prehistoric Times,” p. 400; also Quatrefages’s “Human Species,” p. 138. Lubbock’s “Prehistoric Times,” p. 402. For criticisms on this calculation see Southall’s “Recent Origin of Man.” British Assoc. Rep., 1879. Quatrefages’s “Human Species,” p. 139, _et seq._ Nicholson’s “Manual of Zoölogy,” p. 535. Dana’s “Manual of Geology,” p. 416, note. Keary’s “Dawn of History,” p. 382; Morgan’s “Systems of Consanguinity and Affinity.” Dawkins’s “Early Man in Britain,” p. 324. “Prehistoric Europe,” chap. xvi to xxii. Chapter IX EARLY MAN IN AMERICA.1 Conflicting accounts of the American Aborigines—Recent discoveries—Climate of California in Tertiary Times—Geological changes near its close—Description of Table Mountain—Results of the discoveries there—The Calaveras skull—Other relics—Discussion of the question—Early Californians Neolithic—Explanation of this—Date of the Pliocene Age—Other discoveries bearing on the Antiquity of man—Dr. Koch’s discovery—Discoveries in the Loess of Nebraska—In Greene County, Ill.— In Georgia—Difficulties in detecting a Paleolithic Age in this country—Dr. Abbott’s discoveries—Paleolithic Implements of the Delaware—Age of the deposits—The race of Paleolithic man—Ancestors of the Eskimos—Comparison of Paleolithic Age in this country with that in Europe—Eskimos one of the oldest races in the World.