1 88 1. 27 Trans. N. Y.Ac. Scu 



like that of the Catskills, consisting- of a regular succession of layers 

 which are horizontally homogeneous and from which the phenomena 

 of disruption are absent. The original disintegration and erosion of 

 the mass which resulted in the production of the ranges was perhaps 

 mainly influenced by the direction of the jointage. With this the trend 

 of the ranges in the vicinity of the Kaaterskill Clove appears to coin- 

 cide. The ravines, cloves, and deepest notches and valleys may be 

 attributed to the streams of the present hydrographical basins, or to 

 those connected with the ancient eastward and south-eastward inclina- 

 tion of the stratum already considered. But recent observations on the 

 juxtaposition and coincidence of the highest gaps in successive parallel 

 ranges may possibly indicate the remnants — in cross-section — of the 

 beds of ancient streams at that level (about 3000 feet); this conclusion, 

 if confirmed, would signify an inclination of the plateau to the N.N.E. 

 (or to the S.S.W..'') at a still earlier period, that immediately succeeding 

 its elevation. 



Karnes. — In the upper basin of the Kaaterskill, several isolated hills 

 of gravel, etc., occur at an altitude ot 1924 feet, especially on the bank 

 of the stream near the head of the Clove, which are probably kames ; 

 their materials, though largely angular, show traces of imperfect strati- 

 fication. Near " Blythewood," on the North branch of the Schoharie 

 creek, a curious conical and steep isolated kame rises 102 feet above 

 the stream, made up of rounded pebbles of the Catskill grit, rarely a 

 foot in length, overlying a layer of coarse moraine. Its elevation above 

 the sea (1944 feet) exceeds that of any other kame yet observed, those 

 of the Fintry Hills in England reaching 1280 feet, and those of the 

 Androscoggin Lakes, in Maine, 1600 feet. A very interesting series of 

 from eight to twelve very low kames — like parallel ridges, often curv- 

 ing, made up of large rounded boulders — was also found to follow the 

 course of the Kaaterskill near Palenville, in the Hudson Valley, at the 

 mouth ot the Clove, at an elevation of about 700 feet ; these probably 

 mark the course of the sub-glacial stream which issued from the mouth 

 of the Clove. The paper concluded with observations on a deposit 

 of laminated sand underlying the ground moraine : on the feeble erosion 

 of the slopes of the Clove during the period which has elapsed since 

 the close of the Glacial epoch ; and on a new section of the strata of 

 South Mountain obtained from a recent road cutting. 



Discussion. 



Prof. E. C. H. Day observed that one portion of Dr. Julien's re- 

 marks reminded him of an idea which had struck him many years ago, 

 with regard to the surface geology of a valley on the south coast of 

 England, near Charmouth, in Dorsetshire. 



