Geological pamphlets.
Published: 1881
Place of publication: [v.p
Language: eng
Subjects: Geology -- North America; Geology -- Great Lakes
Notes: Title from spine.

Some plates in v. 2 accompanied by leaves with descriptive letterpress.

Offprints of articles from various journals.

Includes bibliographical references.

Some articles have original paper covers bound in.

Titles of articles in v. 1-2, cut out from "List of publications, by J.W. Spencer ...", are pasted on blank leaves at front of each volume.