Mineral Resembling Meerschaum 275 



a large number of crystals of such great size in this locality,, 

 where no trace of olivine has been found, even by microscopic 

 means, would at least seem to indicate some other source than 

 olivine. 



III.— HISTORICAL NOTES. 



The best specimen of hampshirite found in my explora- 

 tions consisted of a group of crystals disclosed by cutting, 

 away the embedding hampdenite. When I came to Minne- 

 sota, this specimen was supposed to be packed for removal 

 with a large collection previously on exhibition in a mineral 

 store in New York City. On reaching my destination in 

 Minnesota and unpacking my specimens, I missed the fine 

 hampshirite and concluded the box containing it had been 

 lost enroute. While revising this paper for publication my 

 attention was called to the Mineralogical Lexicon of Franklin, 

 Hampshire and Hampden counties, Massachusetts,* publish- 

 ed by Prof. B. K. Emerson, of Amherst College. This lexi- 

 con contains notes on hampshirite which aroused my interest 

 to that degree that I solicited of Professor Emerson the loan 

 of the somewhat unique specimen belonging to the Clarke 

 collection in Smith College. Through his courtesy that 

 specimen was sent me for examination. (See plate vii, fig. 

 vi.) Inspection proves that it is the identical specimen lost 

 by me during my removal to Minnesota. The figure in Bul- 

 letin I26t gives a rough idea of the general appearance of this 

 specimen, but fails to bring out fairly the unique appearance 

 of the grouped hampshirite crystals. I took this specimen 

 myself from an excavation in the locality above described ; 

 chipped away the embedding hampdenite from the rough 

 block and exposed the crystals as they now appear upon the 

 specimen. The labor devoted to this preparation as well as 

 its peculiar formation gave an impression which leaves me no 

 room to doubt the identity of this individual piece. I take 

 great pleasure in inspecting this specimen and feel indebted 

 to Professor Emerson for his courtesy in loaning it, thereby 

 enabling me to identify beyond doubt my long lost crystal 

 group, and thereby also enabling Professor Emerson to revise 



•Bulletin 126, U. S. Geol. Survey, Washington, 1895. 

 tlbid, plate 1, Fig. D. 



