NOTES AND EXHIBITS. 1085 



The spherulitic bodies are mostly elongated in the direction of 

 flow, and some exhibit a faint internal fibrous radial structure. 



The base appears to be composed of magnetic iron, and some 

 small clear grains, some of which are singly refracting and may be 

 leucite. This rock has not yet been found in situ. The only other 

 similar specimen seen was found in the shape of another stone 

 hatchet in the parish of Scone, Vegetable Creek, about four miles 

 distant from the spot where the first specimen was picked up. 



The second rock has a base similar to the first, crowded with 

 spherulites, but in place of the chiastolite are several clear crystals 

 about one-twelfth inch in diameter, giving six-sided sections with 

 clear interiors and thin black borders. All these crystals remain 

 dark under crossed nicols. 



Both these rocks appear to be lavas, which gives additional 

 interest to the occurrence in them of chiastolite, a mineral usually 

 associated with metamorphic rocks. 



69 



