3tt Kraus- 



Occurrence of Gelestite near Syracuse, JV. Y. 



still present in the interior — to the left — in well-defined crystals, 

 while on the outside, as a result of leaching, only the crystal 

 cavities are to be seen. 



Several specimens from the first locality show very large 

 cavities, and their resemblances to the impressions made by 

 chisel points does not seem to be farfetched. Figs. 7 and 8 

 show such " impressions " or cavities on the outside, while in 

 figs. 1 and 2 the fresh mineral can be seen in the interior of 

 these same specimens. Cavities of this character were noticed 

 by Eaton, Yanuxem and others, for Vanuxem* says : " Near 



7 8 



Syracuse, at the Hopper locality in Onondaga Valley, and at 

 Chittenango and so forth, surfaces are seen which show an 

 angular configuration, somewhat resembling those leaves whose 

 ribs are straight, and incline at an angle of about 35° from the 

 stem. These were first noticed by Prof. Eaton in his survey 

 of the Erie Canal, having seen some which were thrown out 

 in digging a well at Syracuse, the cause of which was rightly 

 referred by him to crystallization." 



Yanuxem further says : u On the canal, near Lake Sodom, 

 layers of a similar kind but belonging to a lower deposit show 

 numerous cavities not unlike those made by a small chisel of 

 about three-quarters of an inch in width ; some of them single, 

 and others cross each other as though struck at random. In 

 the surface also of the calciferous slate above the gypseous 

 deposit at Crill's in the town of Stark, there are small impres- 

 sions in relief, the best defined of which are like obtuse Indian 

 arrow heads, being triangular with their sides somewhat 

 curved ; these were previously noticed but not their forms." 

 From this general description given by Yanuxem and also from 

 the fact that Crill's farm in the town of Stark, Herkimer 

 * Vanuxem, Natural History of New York, Third District, 1842, 109. 



