Geology and Mineralogy. 399 
Same composition with menaccanite, from which it differs in crys- 
talline form.—(Koch, Min. u. Petr. Mitth, i, 1877.) 
aboite. Occurs in minute, exceedingly thin, triclinic crystals, 
which approach the form of pyroxene quite closely. H.=6 an 
above. G.=3°505. Color hair-brown, in some crystals brownish to 
hyacinth red; opaque to translucent. An analysis afforded :— 
Si0, 52°35, FeO, 44°70, (AIO, tr.), CaO 3-12, MgO, Na,O tr., 
ignition 0°40. The mineral is more or less closely related to 
babingtonite.—(Ibid.) E. 8. D. 
11. Geology of New Hampshire.—The third volume of this Re- 
port, recently issued, contains the reports of W. Upham on drift, 
awes on mineralogy and lithology, already noticed, 
and also chapters on Glacial Drift and on Economic Geology, by 
C. H. Hitchcock. 
rnardston—the semi-metamorphic beds of which contain 
large erinoidal remains. 
€ writer’s observations prove that the Bernardston limestone 
group * embraces, within a few miles northeast of Bernardston, 
Pg * See this Journal, III, xiv, 379, 1877. 
AM. Jour. oe Vou. XVI, No. 95,—Nov., 1878. 
