132 G. W. Hawes—The Greenstones of New Hampshire. 
MUNN sed syn ony 540-08 
IER es ate Gedo 13°72 
Ferrous oxide._____-. -.9°84 
Manganous oxide. ___._ "40 
SRN PE cong 11°22 
MADONNA... 5. 11°96 
_ SS Pee Sees 2°40 
Water (ignition) _..__- “90 
99°47 
as fa th as Hanover. They are often quite complex 1 
structure, but, as in the case of igneous diabase,* the chlonte 
distinguishable from the diorytes. In plate V, figure 2, the 
of this rock is represented. The figure 
: an hous appearance, occurrin ; t 
gure, 1n irregular masses, with little appearance of pare : 
yet, as it exhibits bright colors between crossed nicols, 1t 18 @ 
* This Journal, vol. ix, March, 1875. 
