to submit the Salem specimen to analysis, yet it so \^'ell agrees 

 in all its external characters "?vith those from Litchfield, as well 

 as with the descriptions of the books, that there can be no doubt 

 of their identity. The resemblance in the specimens is so 

 striking that Mr Alger, of Boston, to whom I exhibited a spec- 

 imen, was upon the point of saying that it must be from 

 Litchfield, 



The minerals associated witli the Cancrinite are nearly the 

 same at both localities. One was found in bowlders in granite, 

 — the Salem specimens, as nearly as I could judge from a 

 cursory examination of the locality were found in veins or seams 

 in sienite. The Cancrinite is disseminated through the specimen 

 in irregular blotches or masses, varying in diameter from an 

 inch or more, down to those which are minute in extent. It is 

 of a deep, azure blue color, and translucent. It exhibits a 

 crystalline structure, but does not present regular, external 

 forms. Another mineral associated with it, is ElaeolUe. This 

 is in masses of variable color ; the predominant colors may be 

 characterized as bluish, grey and yellowish green. It has a 

 resinous or oily lustre, and is both transparent and opake. 

 The masses appear to be cleaveable. The Cancrinite is embed- 

 ded in the Elaeolite or perhaps in Elaeolite and Felspar. The 

 sulphur or lemon-yellow variety called Nepheline of the 

 Litchfield specimens does not occur in these— certainly not in 

 the specimens which I have seen. I should here remark that 

 the Elaeolite is considered by Dana as a variety merely of 

 Nepheline ; while Phillips regards them both, as distinct 

 species. In chemical composition the difference is slight, yet 

 something ; so also in specific gravity. 



The specimens from both localities contain black mica, and 

 this occasionally in rhombic crystals. White iron pyrites also 

 occur in some of the specimens. In one or two which I exam- 

 ined from the Salem locality, I discovered small crystals of 

 what I presume to be Zircon. The crystals are octahedrons, 

 color brownish-red approaching in some to a hyacinth-red. — 

 Those crystals in specimens at hand were somewhat minute. 



