Bevleir of Recent Geological Literature. 63 
balm, n. var.; A. acadicus Hartt., var. declivis Matt.; Parvif routes, 
A.parvifrons Linis., var. tessella Matt., var. truncattiN, n. var.?: A. 
umbo Matt.; Longifrontes, A. ohtuMlohua Matt.: A. duvidis Hicks, 
A. gibhuH Linrs., var. parfitus Matt., var. arvtilobus Matt.: A. na- 
thorsti Brogg., var. coriflnens, n. var., A. fissus Lundg., var. trifit^siis, 
n. var.; A. punctuosua Aug. L.evigati, A. loevigatus Dolvi., var. ier- 
ranovicuH, n. var., var. eiceroides, n. var., var. mamiUa, n. var.: ^1. 
nudiis Beyr.? 
Figures of these Agnosti appear on three plates of the memoir. 
The Diftseminated Lead Orea of Soiitlipasteni Missonii. By Arthur 
WiNSLOW. Bulletin 132, U. S. Geological Survey: .^1 pages, with six 
plates (maps and cross-sections), and three tigures in the te.Kt: 189G. 
The structure and areal geology of this district are described and map- 
ped, with notes of recent progress in mining and the general distribu- 
tion of the ore as revealed by drilling. The ore-bearing formation is the 
St. Joseph limestone, in which galena is desseminated through beds 
varying within short distances from one or two feet up to ten or twentv 
feet in thickness. Mining on a large scale began soon after the close of 
the civil war. and several new mines have been opened during the last 
five years. vv. u. 
Contributions to tlie Cretaceous Paleontology of the Pari tic Coast: 
The Fauna of the Kno.vrille Beds. By Timothy W. Stanton. Bulletin 
133, U. S. Geol. Survey : 1.32 pages, with 20 plates; 1895. Structurally 
and faunally, these Aucella-bearing beds, occurring in the Coast ranges 
of Califfjrnia. Oregon, and Washington, seem to constitute a single and 
well defined geological formation. The fauna, however, shows a grad- 
ual change from the lower to the upper beds, while yet having no dis- 
tinct break which would justify referring one portion to the Jurassic 
and another to the Cretaceous. The author regards the whole formation 
as of Neocomian age. It has 77 species and varieties of invertebrates, 
as here described, of which 50 are new, 12 have been previously de- 
scribed, and the remaining 15, on account of insufficient material, can 
be only generically determined. w. v. 
Bibliograjthy of Missouri Geology. By C. R. Keves. (Mo. Geol. 
Surv,, vol. 10, pp. 219 523, 1896.) This article is the last in the tenth 
volume of the present Missouri Survey, whicli volume will soon be dis- 
tributed. The bibliography includes (1) an authors' index, containing 
the full title, pages, etc., and a very brief synopsis of each article; (2) a 
title index; and (3) subject entries and cross references. In this manner 
each article is entered at least three times and many appear nK)re than 
three times. Moreover, whenever an article is entered it appears with 
its full title, author and place of publication. This of course much in- 
creases the bulk of the bibliography, but at the same time it makes it 
more serviceable in doing away with the necessity of turning from one 
title to another to find^a complete reference. The present work differs 
considerably in jjlan and scope from the earlier bibliography of Missouri 
geology by F. A. Sampson (Mo. Geol. Surv., Bull. 2, 1890). u. s. c;. 
