BIBLIOGRAPHY AND INDEX OF NORTH AMERICAN 
GEOLOGY, PALEONTOLOGY, PETROLOGY, AND MINER- 
ALOGY FOR THE YEAR 1895. 
By Fred Boughton Weeks. 
INTRODUCTION. 
The present work comprises a record of publications on North Ameri- 
can geology, paleontology, petrology, and mineralogy for the year 1895. 
It is planned on the same lines as the previous bulletins (Nos. 130 and 
135), excepting that abstracts appearing in regular periodicals have 
been omitted in this volume. 
Bibliography. — The bibliography consists of full titles of separate 
papers, classified by authors, an abbreviated reference to the publica- 
tion in which the paper is printed, and a brief summary of the con- 
tents, each paper being numbered for index reference. The extent 
of papers less than a single page in length is indicated as J p., 5 1. 
(lines). 
Index. — The subject headings, their subdivisions and arrangement, 
are shown in the Classified Key to the Index. They comprise geo- 
graphic, geologic, mineralogic, paleontologic, and petrologic subdivi- 
sions. Under Economic Geology is given a list of useful minerals and 
ores described in publications examined; under Mineralogy, a list of 
minerals described in such publications; under Paleontology, a list of 
genera and species of fossils therein described, and under Petrology, 
a list of rocks described, reference being made in each case, by author's 
name and number of article in the Bibliography, to the paper in which 
the fossil, mineral, or rock is described. 
