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SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 'J'J 



Fic. 31. — Salters Quarry, Groton, Connecticut. A typical stone quarry 

 like hundreds in New England, any one of which can be depended upon to 

 furnish much interesting mineralogical material. 



Fig. 32. — Hungry Hill iolite locality, Guilford, Connecticut. The photo- 

 graph shows Messrs. Alfred E. Hammer and Warren F. Mumford standing 

 on what is probably the best locality for iolite in North America, if not in 

 the world. 



