76 



TRANSACTIONS OF THE 



[NOV. 30, 



which, although not sliowy to the eye, afford, with the aid of a 

 magnifying ghiss, some interesting features. 



The forms in-esented are those of crystals arranged in hittice- 



like combinations somewhat similar to specimens from North 

 Carolina, known as Reticulated Entile. Two of our New York 



specimens are wheel-like figures, similar to the crystallographic 

 structure of a snow-flake. 



