124 TJie American Geolonist. August, 1895. 
to note that the author, while recognizing certain changes due to dyn- 
amic forces, does not consider that there is any relation of cause and ef- 
fect between amphibolization and dynamic action in the cases he has 
studied. 
In comparing this rock with similar rocks from other parts of the 
world, he mentions the pyroxenytes of North Carolina and Maryland, 
descriljed by Dr. G. H. Williams in the American Geologist (vol. vi, 
p. 38, 1890), and calls attention to the confusion that attends the use of 
that term : Coquand, Hunt, Kalkowsky, Dana, Zujovie and Doelter em- 
ployed it in various senses, none of them the same as that assigned to it 
by Williams. This whole group of similar rocks is included by the 
author under the term pynwenolyte, and they are considered as special 
forms of Iherzolyte, appearing as dykes. The term websteryte, given by 
Williams to a bronzityte belonging in this group, had already been 
used to designate a mineral, a hydrated sulphate of alumina, and, as re- 
marked by the author, has to be rejected as a synonym. 
One of the most interesting facts reported by the author is the devel- 
opment of zeolites in the metamorphic rocks at the contacts with these 
basic eruptives. The zeolites are chaVjazite, thomsonite, and christian- 
ite, rarely stilbite. He has before reported zeolites in granulytes, 
gneiss, Paleozoic schists, cipolins of the gneisses, in Jurassic limestones, 
in porphyrytes and in ophitic diabase, where they seem to have resulted 
from mineralized waters which do not necessarily proceed from any 
great depth. These jjhenomena are all in the Pyrenees mountains. 
N. H. w. 
Peary Auxiliary Expedition of 1894: Geology. By T. C Chamber- 
LiN. (Pages 29-56, with eight plates, forming Appendix A of the Bulletin 
of the Geographical Club of Philadelphia, No. 5, June, 1895.) This re- 
port, appended to a narrative of the expedition by its leader, Mr. Henry 
G. Bryant, gives in popular form a concise but comprehensive summary 
of the author's geological observations in Greenland, which are being 
more fully published in the Journal of Geology. Its plates are from 
photographs of the unglaciated Dalryinple island, of the glaciated Carey 
islands, which have strife and drift boulders on their summits, 500 feet 
above the sea, of the Bryant, Gable, Bowdoin, Fan, Tuktoo, and East 
glaciers, and of a portion of the edge of the ice-cap, being the same series 
which appears also in the author's presidential address to the Geologi- 
cal Society (Bulletin, G. S. A., vol. vi, pp. 199-220, Feb., 1895: Am. Ge- 
ologist, vol. XV, pp. 197, 198, March, 1895). The greater part of the 
present paper treats, like that address, of the glaciers, local neve fields, 
and margin of the inland ice-sheet, in the vicinity of Inglefield gulf. It 
also describes the topography of the western coast, the general geology 
of the borders of Inglefield gulf, and the icebergs, floes, and pack ice of 
the region. Brief outlines of these minor parts may be here noted, sup- 
plementing the ])revious abstract cited in our March number. 
From cape Desolation, near the south end of Greenland, northward 
for abovit half the distance to Disco island, the coastal movmtains have 
sharply angular forms ; but along the further extent to this large island 
