Correlation papers. Cretaceous, by Charles A. White.
—— Same. No. 83. Washington, 1891. 173pp., 2 pls..20
CONTENTS.
Correlation papers. Eocene, by William Bullock Clark.
—— Same. No. 91. Washington, 1891. 88pp..10
CONTENTS.
Record of North American geology for 1890, by Nelson Horatio Darton.
—— Bulletins nos. 66 to 70. [Contents already noted.] Washington, 1892. 321pp., 6 pls.1.00
H.R. mis. doc. no. 21; 52d Cong., 1st sess.
—— Same. No. 71. [Contents already noted.] Washington, 1892. 2 l., v+744pp. .50