Geology and Natural History. 403 
from Spitzbergen, in all sixteen species of Ferns and Conifers with 
only one isetum., 
8. On Serpentine Pseudomorphs after Monticellite, a Lime- 
magnesia Chrysolite ; by G. vom Ratu. sia war k. Akad. d. 
Viss., Berlin, Nov. 19, 1874.)—The pseudomorphs described by 
om Rath are from the Pesmeda ea on Mt. Monzoni in the Tyrol. 
the Monzoni peak, come up ann ren of the Triassic 
rocks, viz., fassaite, vesuvianite, gehlenite, garnet, spinel, e In 
a high ridge adjoining the Pesmeda Alp, at a height of pause 2500 
yards, the limestone, near its contact with “augitic greenstone,” 
—— ma mi ect eae Vom Rath’ gives See excellent 
the west of Besmeda sie to the dee of Mt. Monzoni, near 
the junction of the limestone baat: syenyte. This massive kind is 
externally altere 
om Rath also states that the locality of spe 
morphs affords others of agesiaagae= pei a to fassaite. Thee 
tals are an inch and less in size. They have sometimes a patient 
of serpentine or calcite. The Sonia s acidiencr phe sm in all cases 
preceded the serpentine. 
9. On the conver. ae of an argillaceous rock to Serpentine; by 
A. p’Acniarpr. (Bolletino R. Com. Geol. d’Italia, 1874, p. 336.) 
—In Montajone, Italy, south of San i 
N.W. A 
A, clayey deposit containing nodules or wien th nts of indurated cl i B, the part of same de- 
St ei a o Upper Low ok dpape hay in which eae nodules consist o en surrounded by 
r Tertiary; s. 8, steatitic 3 a, d, dolomitic v 
and nentitie 5 8) veins, ‘and contains besides suclatiod nodules of 
‘< tac * 
a 
northwest loses its steatitic and dolomitic veins, and graduates into 
