weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1894. 81 
479 Ries (Heiiirich). Microscopic organisms in the clays of New York 
State. 
N. Y. Acad. SeL, Trans., vol. xiii, pp. 165-169. 
Contaius notes on the occurrence of diatoms in these clays »nd a 
list of species found. 
480 On the occurrence of Cretaceous clays at JSTorthport, Long 
Island [N. Y.]. 
School of Mines Quart., vol. xv, pp. 354-355. 
Gives a list of fossil plants found in these beds which indicate that 
they are of Cretaceous age. 
481 Rowley (R. R.). New species of crinoids and brachiopods from 
the Missouri Hamilton. 
Am. Geol., vol. xiii, pp. 151-154, figs. 1-10. 
Describes four new species from the Hamilton beds of Callaway 
County, Mo. 
481rt Russell (Israel 0.). Second expedition to Mount St. Elias, in 1891. 
Abstract : Am. Geol., vol. xiv, pp. 190-191. 
Noticed in Bibliography and Index for 1892 and 1893. 
481& A geological reconnoissance in central Washington. 
Abstract : Am. Geol., vol. xiv, pp. 51-52 (| p.). 
Noticed in Bibliography and Index for 1892 and 1893. 
481c Malaspiua glacier. 
Abstract : Am. Nat., vol. xxviii, pp. 1025-1027. 
Noticed in Bibliography and Index for 1892 and 1893. 
482 Rutley (Frank). On the origin of certain novaculites and quartz- 
ites. 
Geol. Soc. London, Quart. Jour., vol. 1, pp. 377-392, pi. xix. 
Abstract: Am. Geol., vol. xiv, p. 253 (i p.). 
Quotes from a paper by L. S. Griswold on the novacnlites of Arkan- 
sas, and discusses the evidences as to the origin of these rocks. 
s. 
483 Safford (James M.). Phosphate-bearing rocks in middle Tennessee ; 
preliminary notice. 
Am. Geol., vol. xiii, pp. 107-109. 
Describes the lithologic characters of the Devonian strata in Avhich 
the phosphate occurs and the character of the phosphatic material. 
484 Salisbury (Rollin D.). Superglacial drift. 
Jour, of Geol., vol. ii, pp. 613-632. 
Describes the character of superficial drift of alpine glaciers, pied- 
mont glaciers, and of a continental ice sheet. 
485 The drift: its characteristics and relationships. 
Jour, of Geol., vol. ii, pp. 708-724 and 837-851. 
Defines drift and describes the thickness, lithologic composition, and 
structure of the drift, the topography of the drift and drift-covered 
area, the relation of the drift to the underlying rock, and the charac- 
teristics of the rock underlying the drift. 
Bull. 135 
