\i)-+ The American Geologist. December, 1894 
elusions. Explication des excursions, including La geologic des environs 
de Washington, Excursion afox Montagnes Rocheuses, Excursion au Lac 
Superior. 
Trans. X. Y. Acad, of Sciences, vol. IB, contains: Observations on the 
geology and botany of Martha's Vineyard, Arthur Rollick: The ore de- 
posits at Franklin Furnace and Ogdensburg, X. ■!., J. P. Kemp: Addi- 
tional notes on recentlj discovered deposits of diatomaceous earth in the 
Adirondacks. C. F. Cox; On allanite crystals from Franklin Furnace, X. 
.1.. A. S. Eakle: A Pleistocene lake bed at Elizabethtown. Essex Co.. X. 
Y.. Heinrich Ries; A new Cladodont from the Ohio Waverly, Cladose- 
lache newberryi, n. sp., Bashford Dean: Some further notes on the geol- 
ogy of the north shore of Long Island. Arthur Hollick: An orbicular 
granite from Quonochontogue beach, R. I., J. F.Kemp: Mineralogical 
notes— topaz from near Palestine, Texas, and Diamonds from Wisconsin, 
ti. F. Kuiiz; On some new forms of wollastonite from New York stale, 
Heinrich Ries: Note on the petrography of certain basaltic boulders 
from Thetford, Vt., E. O. Hovey; Microscopic organisms in theclaysof 
Xew York slate, Heinrich Ries: On caswellite, an altered biotite from 
Franklin Furnace, N. J., and quartz crystals from Ellenville, X. V.. A. 
H. Chester: The intrusive rocks near St. John, X. B., W. D. Matthew- 
Additional note on wollastonite from New York state, Heinrich Ries: A 
-roup of diabase dikes among the Thousand islands, St. Lawrence 
river, C. H. Smyth, Jr.; The geology of Essex and Willsboro' town- 
ships, Essex Co., N. Y., T. H. White. 
Proc. California Acad, of Sciences, sec. ser., vol. 4, pt. 1. contains: 
On some Pliocene fresh-water fossils of California, J. U. Cooper. 
Proc. A. A. A.S., vol.42, Madison meeting, contains: Geologic time 
as indicated by the sedimentary rocks of Xorth America. C. D. Wal- 
COtt; and abstracts of several papers, most of which have been pub- 
lished elsewhere ill full. 
CORRESPONDENCE. 
NOTE ox "Xaxxo." The description of this remarkable ty) f ceph- 
alopod, by .1. M. Clarke, in the October AMERICAN GEOLOGIST, from the 
Trenton limestone of Minnesota, has interested me very much, since 
formerly I cqllected specimens of the same species near Minneapolis. 
This type of cephalopod is not new. however, having been previously 
found by Gerhard Holm, who in 1885 described and figured Endoceraa 
belemnitiforme, a. very similar species, from the Silurian of the island of 
Geland and of Estland [Esthonia]. (See Holm, "Leber die innere Or- 
ganisation einiger silurischer Gephalopoden," in Pabeontologisehe Ab- 
handlungen, von W. Dames und E. Kayser, vol. 3. pt. 1. p. I. and plate 
D- [*] 
[*The final paper by Prof. Clarke, as contributed to the reports of the Minnesota Geo- 
logical Survey, now in press, refers fullv to the work of Holm, and states that, notwith- 
standing his reference of this form to Endoceras, it is quite different and worthy of a 
generic rank. — Eos. | 
