O. C. Marsh on Ledererite from Nova Scotia, 363 
to be considered a distinct species were mainly founded. The 
mineral examined had a specific gravity of 2°169, and its com- 
position, according to this analysis, was as follows:— 
SSUIOS |. 5 wine ease ehbes Cel ee TEE ae 49°47 
ARMS cn 6 64 d0 alee 85954 0b ols aie 21°48 
ee een Fe kee ee gee 11°48 
OOK ams 5 5a ees bene eee LAA ueee ee 3°94 
Phosphoric acid,.......++s+ssesecenees 3°48 
PYG OF 10th o's 5k woe ss > ope ne nen eee 0°14 
Foreign matter, .......5.eee eee e cece 03 
a) eee eR en ere ere a ta, 8°58 
98°60 
: : 1861 when a number of crystals were found near the original 
nes ity, which had long been supposed to be exhausted. Shere 
Was on the north coast of Cape Blomidon, at a point nearly op- 
_ * Jahresbericht, xiv, 175. Alger’s Phillipp’s Mineralogy, p. 630. 
_ | Handwérterbuch, vol. i, p. 387. is Vol. iv, p. 394. 
Boston Soc. Nat. Hist. Journal vol. v,p-306. 0 
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