394 The American Geologist. June, i89e 
formations were delineated. The following formations are included in 
the appendix: Potsdam sandstone, Calcif ero us formation, Chazj forma 
tion, Phillipsburg series I Fort Cassin rocks), Quebec City formation 
(in which are included the Parnham limestones), the Trenton (including 
the Black River), the Utica, Lorraine, besides Silurian and Devonian 
areas. 
In the Devonian two r orizons arc noted and characterized by differenl 
fossil remains, viz : a horizon with abundant corals, probably Upper 
Helderberg or Corniferous in age. and a horizon characterized by the 
presence of Spirophyton. Since the publication of the report the form 
occurring on Sargent's bay has been shown to be more akin to S. velum 
than to S. caudagalli, and the rocks from which this was derived are 
probably a little newer than they were at first designated. The Silurian 
outlier on St. Helen's island, near Montreal, has received some degree 
of attention and a revision of the good work done by Sir Wm. Dawson. 
Prof. Donald and Dr. W. E. Deeks is therein incorporated: 
This paper contains interesting notes on upwards of 84 collections, 
made chiefly by Dr. Ells and his assistants, for the preparation of his 
report (now in press), also on collections made by various officers of the 
Survey at the various dates indicated. The lists of fossils are classified 
zoologically and chronologically and will serve as important data in the 
determination of the various geological formations and horizons com- 
prised in the Montreal sheet of the Eastern townships of Quebec, about 
which there has been so much controversy at different times. 
Mineral Resources of New York Slate. By F. J. H. Merkill. 
(Bulletin of the New York State Museum, vol. n, no. 15, 8vo. 233 pp., 
2 maps. Albany, 1895. Price 10 cents.) This bulletin is one of the 
valuable series issued by the New York State Museum at irregular in- 
tervals since 1887. The subject matter has usually been of special 
interest to the citizens of New York and has followed the lines of prac- 
tical entomology, botany, and practical geology, thus, in a way, supple- 
menting the work of the geological survey. The material for this 
bulletin was largely gathered in preparing for the New York exhibit at 
the World's Columbian Exposition held in Chicago in 1893. 
The author gives in a concise form descriptions of those industries of 
the state which are based on its mineral wealth, such as stone quarry- 
ing, iron mining, clay and pottery working, mineral paint manufacture, 
salt production, and the preparation and sale of fertilizers, abrasives, 
mineral fuels and mineral waters. Lists of the companies engaged in 
winning and preparing the various products for market, and of the 
localities in which the materials arc found, are given, and the diverse 
industries are briefly described. The geological relations and in many 
cases the chemical and mineralogical composition are given. 
Being accompanied by two geological maps showing the locations of 
the various mineral deposits of value and furnished with an excellent 
index, the bulletin is a complete hand-book and guide to the extensive 
natural industries of the empire state. 
