REPORT OF THE STATE PALEONTOLOGIST 1902 863 



disturbances or how deeply they may have effected the rest of 

 the mountain mass. For the most part, the mountain stands 

 with abrupt sides in all directions except toward the southeast, 

 being a wall of Manlius limestone underlain by the Hudson 

 river shales. Such disturbances as it has undergone would be 

 determinable with difficulty except by the aid of paleontologic 

 facts. The interest pertaining to this area, the extensive series 

 of exposures running through a number of highly fossiliferous 

 deposits, the instructive illustrations which it affords of denuda- 

 tion, folding, overthrust and displacements of various kinds and 

 the easy accessibility of the locality have justified a more care- 

 ful study of the area than has heretofore been made. 



This work has been specially facilitated by the fact that we 

 have been able to plot the results on a topographic map of the 

 area, prepared at the expense and under the personal direction 

 of Dr John O. Smock, formerly assistant in charge of the State 

 Museum, later, state geologist of New Jersey and now a resi- 

 dent at Hudson. The areal work on this problem has been 

 assigned to Prof. A. W. Grabau of Columbia University, who 

 has this season spent some weeks on the ground and has arrived 

 at a satisfactory analysis of the structure involved. According 

 to his determinations, this proves to be much more complicated 

 than had been supposed, and the succession of rocks and faunas 

 there exhibited will, when properly displayed on the map, throw 

 new light on the forces which were efficient in upturning the 

 fossiliferous sediments of eastern New York. Dr Grabau's 

 work is essentially finished, and his results thereon will be 

 found in another part of this report. 



The Westfield mastodon. In the month of June I was informed 

 of the discovery of mastodon remains in the village of West- 

 field, Chautauqua co. Such discoveries, though of frequent 

 occurrence, are worthy in every case of investigation and record, 

 and in this instance the situation was as follows. The bones 

 were accidentally discovered while an excavation was being 

 made on the property of Mrs Alice Peacock. The lot in which 

 they were found to occur lies along the Nickel Plate Railroad, 

 and is bounded on one side by the barn pertaining to the prop- 

 erty and on the other by the highway. Across the highway is 

 a low swampy area which extends for some distance to and 



