yS NEW YORK STATE MUSEUM 



appears to have been the old river bottom." The elevation of the 

 surface of these deposits are 400 feet, and as the tooth was obtained 

 22 feet below the surface it was found at an elevation of 378 feet. 



These sand and gravel deposits, which are really to the southeast 

 of Clyde, are of delta formation and were formed by the escaping 

 waters of glacial Lake Dawson, which poured through the Fairport 

 channel and built its delta near Clyde in the waters of glacial Lake 

 Montezuma, an initial body of water, which later became a part 

 of and belonged to the province of the larger glacial Lake Iroquois. 

 The depth, the known character and the history of the deposits in 

 which the Clyde specimen was found, stamp its age, the tooth hav- 

 ing been imbedded during Lake Dawson time and while Lake Iro- 

 quois was still in its infancy, the latter lake at this time extending 

 only over the Syracuse-Rome area. 



The Clyde delta was formed by the same waters flowing from 

 glacial Lake Dawson as were the glacial deposits in which the 

 mastodon teeth were probably found at Macedon, 24 miles farther 

 west from the mouth of this glacial river which terminated near 

 Clyde. The Clyde delta is well shown on 45 Fairchild's maps as are 

 also the deposits at Macedon and those at Perinton where mastodon 

 remains were found. 



14 1916. Savannah. (E. primigenius). The remains of 

 this mammoth were dug from a gravel pit on the west side of a 

 drumlin 1 mile northwest of Savannah. The parts recovered in- 

 clude two teeth, shoulder blade, fragments of the leg bones and 

 foot bones. Fragments of a tusk were also observed but these were 

 not collected. The drumlin is an isolated one upon which the waters 

 of glacial Lake Iroquois built a spit in which the gravel bed was 

 opened. The elevation of the gravel bed is about 30 feet above the 

 surrounding marshes. The nearest drumlin is more than one-fourth 

 of a mile away. Chadwick 46 states, " There is every reason to be- 

 lieve, nevertheless, that the bones were buried in these beach gravels 

 by the waves themselves, and at the time when Lake Iroquois was 

 at its full height. In no other way could they have become so inter- 

 stratified with the beach shingle." The evidence presented gives us 



45 N. Y. State Mus. Bui. 127, 1909, pi. 3, and also Rochester Acad. Sci. 

 1919, Proc. v. 6, pis. 2, 3. 



40 More complete details of this find are given by Prof. G. H. Chadwick 

 in N. Y. State Mus. Bui. 196, 1918, p. 44-46. The account is accompanied 

 with detailed maps and sketches. 



