530 



THE AMERICAN NATURALIST [Vol. XL 



Wafer Supplij and Irrigaiion Paper 119, by J. C. Hoyt and B. 

 AVood, is an "Index to the Hydrographic Progress Reports of the 

 United States Geological Survey from 1888-1903." This is a valuable 

 paper, as it brings together in one volume a bibliography of the papers 

 published by the Survey, which have heretofore not been satisfactorily 

 listed in the bibliographies. 



BuUetiyi 7, Fourfh Series, Geologiml Surrey/ of Ohio, by Charles S. 

 Prosser, published in Columbus, Xovcnihcr l<)().j, and entitled "Re- 

 vised Nomenclature of the Ohio ( icoloiricjil Formalidiis,'" is an im- 

 portant contribution to stratigra|)liy. Ii Miccc^fiilly presents the 

 results of much detailed study, and i.la<vs ilir pivvinnslv rather 

 loosely defined horizons in their ])roi»rr positions. It >li(i\vs not only 

 their relation to each other, but, in a t)r(>a<l way, cniivlato ilir torina- 

 tions with those outside the State. Ihillclin ;. Iiowcv.m-, nnly a pre- 

 liminary report, so that the final report is awaited with interest. 



Two new maps of portions of Alaska are iiichide.l in the report of 

 L. M. Prindlc on "The Gold Placers of Fortvntile. liireh Creek and 

 Fairbanks Regions, X\^?k^"— Bulletin 251, Vuiird Stairs Crnhnjiral 

 Survey. The report is based mainly on reconnaissance^ work, but 

 certain facts seem to have been quite thoroughly worked out. One 

 fact of most general interest is the determination that a large i)art of 

 the placer gold has been derived from the quartz veins in a series of 



The Journada del Meurto of New Mexi. .. i> a l.ol.on plain that has. 



Recent studies by Keyes, published in \Vnt,r Supphi and Irrigation 

 Paper 123, show that the district afford^ proiui.e a^ an artesian ba-in. 

 The shallow ground-water comlitioiis are not very 1:00,1. l)nt the porous 

 Cretaceous sandstone which is folded into a '>yneline and has the 

 impervious Permian red beds at its base, alfords (r,„„] water at a depth 

 of not over 2000 feet, even in tlie center of the basin. The water is 

 practicallv fresh, the slight saline scale deposited })v evaponrtioii l)eing 

 common salt, so that it is adapted to all .lotne.ti.-' purpose.. 



"Pahe<M.tolo.^y ot- the Malone -lura.Me V .vn^J.[u li^ Tr^ilr^hy 

 Franu. Whnten.ore Cra_.n. uith "str.ti.n.aphie X.te. on Malone 



by T. W. Stanton. The re[,orl <.MUains I's phile.'ut' fos.ik and'cme 

 topographic map ot' the di.^triet. 



