f)8 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 146. 
328 Mead (Daniel W.). Notes on the hydro-geology of Illinois in rela- 
tion to its water supplies. 
111. Soc. Eng. and Surveyors, 8th Ann. Rept., 1893. 
Describes the geologic features of the State and its drainage systems, 
and gives sections showing the character of the strata and tables of 
physical data of artesian wells. Contains geologic maps of Illinois and 
of northern Illinois and southern Wisconsin and a cross section. 
329 The hydro- geology of the Upper Mississippi Valley and some 
of the adjoining territory. 
Assoc, of Eng. Societies, Jour., vol. xiii, No. 7, 1894, 68 pp. 
Gives tables showing the amount of rainfall and rate of evaporation 
in various parts of the region and a general summary of the geology, 
with vertical sections displayed in certain wells. Discusses the glacial 
deposits and presents a number of tables giving physical data of artesian 
and deep wells in the Upper Mississippi Valley. The paper contains six 
maps. 
330 The geology of Wisconsin water supplies. 
Paper read before the convention of American Waterworks Associa- 
tion at Milwaukee, Wis., September 5-9, 1893. Author's edition, Rock- 
ford, 111. 
Describes the general geologic features of Wisconsin in relation to the 
water supply and gives data regarding the artesian and deep wells. 
The paper contains a geologic map of the State. 
331 Geological map and table of economic resources of Illinois. 
Author's edition, Rockford, 111. 
Presents a geologic map of Illinois and tables showing the analysis of 
Illinois limestones and clays and the economic resources with geologic 
strata and geographic locality where found. 
332 Meadows (Thomas 0.) and Brown (Lytle). The phosphates of 
Tennessee. 
Am. Inst. Mg. Engrs., Trans., vol. xxiv, pp. 582-594. 
Gives a historical sketch of phosphato mining and a map of the region. 
Describes the occurrence of phosphatic material at various localities and 
the general geology of the district. Discusses the origin of the material. 
333 Mercer (Henry C). A preliminary account of the reexploration 
in 1894 and 1895 of the " Bone Hole," now known as Irwin's 
Cave, at Port Kennedy, Montgomery County, Pennsylvania. 
Phila. Acad. Nat. Sci., Proc. 1895, pp. 443-446. 
Describes the occurrence of fossil vertebrates and plants in this cave. 
334 Merriam (John C). On some reptilian remains from the Triassic 
of northern California. 
Am. Jour. Sci., 3d ser., vol. 1, pp. 55-57. 
The remains consist of vertebra? and fragments of ribs and were 
obtained from the black bituminous limestones of the Trias in Shasta 
County, Cal. Their systematic position is within the old order Eualio- 
sauria. Proposes the new generic and specific name Shastasaurus pacifi- 
cus for one of the skeletons. 
