30 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 135. 
71a Clark (William B.). The Mesozoic Echinodermata of the United 
States. 
Abstract: Am. Geol., vol. xiv, pp. 329-330. 
Noticed in Bibliography and Index for 1892 and 1893. 
71b A preliminary report on tlie Cretaceous and Tertiary forma- 
tions of New Jersey. 
Abstract: Jour, of Geol., vol. ii, pp. 239-240. 
Noticed in Bibliography and Index for 1892 and 1893. 
71c Williams (George H.) and. Outline of the geology and phy- 
sical features of Maryland. 
Abstract: Am. Jour. Sci., 3d ser., vol. xlvii, p. 320 (■£ p.). 
See Williams (G. H.) and Clark (W. B.), No. 638. 
72 Clarke (Frank W.). An occurrence of anorthite and epidote. 
Am. Jour. Sci., 3d ser., vol. xlviii, p. 429 (communicated). 
Describes the occurrence and chemical composition of these minerals, 
from Maine. 
73 Clarke (John M.). Composite generic fundamenta. 
Am. Geol., vol. xiii, pp. 286-289 (correspondence). 
Describes the variations of the generic type of the genus Leptodesma 
occurring in Hamilton beds. 
71 American species of Autodetus and some paramorphic shells 
from the Devonian. 
Am. Geol., vol. xiii, pp. 327-335, figs. 1-13. 
Keviews the nomenclature of the genus Autodetus and describes the 
new species Autodetus beecheri and lindstrocmi and Protocalyptra j a 
styliophila and marshalli, found in the Devonian of New York. 
75 The early stages of Bactrites. 
Am. Geol., vol. xiv., pp. 37-43, pi. ii. 
Describes some protoconch-bearing specimens of Bactrites from the 
Devonian of western New York. 
76 Nan no, a new cephalopoden type. 
Am. Geol., vol. xiv, pp. 205-208, pi. vi. 
The material described was obtained from the Trenton shales of 
Minneapolis and the Galena shales at Chatfield, Minn. 
77 The succession of the fossil faunas in the section of the Livonia 
salt shaft [New York]. 
N. Y. State Mus., 47th Ann. Rept., pp. 327-352. 
Gives a list of fossils found in the Livonia salt shaft. 
78 New or rare species of fossils from the horizons of the Livonia 
salt shaft [New York]. 
N. Y. State Mus., 47th Ann. Kept., pp. 355-383, pis. 1-4. 
Describes a number of new and rare species from the Devonian found 
in the Livonia salt shaft. 
79 Eeporton field work in Chenango County [N. Y.J. 
N. Y. State Mus., 47th Ann. Rept., pp. 725-751. 
Describes the lithologic character and succession of the Devonian 
strata in this county and gives a resume of the results obtained. 
