weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1894. 97 
59G Vermeule (Cornelius Olarkson), lieport on water supply, water 
power, tlie How of streams, and attendant phenomena. 
N. J. Geol. Surv., vol. iii, Final Report, pp. 1-352, appendixes i and 
ii, pp. 1-62. 
Gives data concerning the amount of rainfall, evaporation, and 
stream gaugings of the drainage systems of New Jersey, and describes 
the process of stream pollution. 
597 Water supply and water power. 
N. J. Geol. Surv., Rept., 1893, pp. 373-385, with map. 
. Describes the pollution of the Passaic and other rivers of New Jersey, 
and gives the location and capacity of certain localities to furnish 
water supply in the future. 
w. 
598 Wadsworth (M. E.). A sketch of the geology of the iron, gold, 
and copper districts [Michigan |. 
Michigan, Rept. of the State Board of Geol. Surv., 1891 and 1892, 
pp. 79-174. 
Describes the general succession of the formations in Michigan, the 
hthologic character of the rocks associated with the iron ore bodies, 
and those of the gold and copper deposits. 
599 Wahnschaffe (Felix). [Classification of Pleistocene deposits.] 
Int. Cong. Geol., Compte Rendu, 5th session, pp. 195 and 196-197. 
Considers a chronologic classification possible for the Pleistocene 
deposits of North Germany. 
GOO Walcott (Charles Doolittle). Notes on the Cambrian rocks of 
Pennsylvania, from the Susquehanna to the Delaware. 
Am. Jour. Sci., 3d ser., vol. xlvii, pp. 37-41. 
Abstract: Am. Nat., vol. xxviii, pp. 950-951. 
Describes the lithologic and paleontologic characteristics of the Cam- 
brian beds of Lancaster County and of the northern belt of limestone 
in Pennsylvania and New Jersey. Concludes that the basal quartzite 
is the same from Vermont to Alabama, that the ba6al sandstone in this 
belt is of Lower Cambrian age, and that the superjacent limestones 
of the northern part carry the Olenellus fauna, and in the central and 
southern part the limestones appear to be represented by shales. 
601 On the occurrence of Olenellus in the Green Pond Mountain 
series of northern New Jersey, with a note on the con- 
glomerates. 
Am. Jour. Sci., 3d ser., vol. xlvii, pp. 309-311. 
Mentions the lindingof Olenellus in the limestone in this region, and 
remarks on the occurrence of a conglomerate both under and overly- 
ing the limestone, and on the correlation of the conglomerate of this 
basin of sedimentation with those of another to the west and north. 
602 Pre Cambrian igneous rocks of the Unkar terrane, Grand. 
Canyon of the Colorado, Arizona. 
U. S. Geol. Surv., 14th Ann. Rept., pt. 2, pp. 497-519, pis. lx-lxv, figs. 
52-53. 
Describes the sections of the Chuar and Unkar terranes and of the 
Chuar lava butte. Discusses the conditions of deposition and age of 
these beds and their correlation with other Algonkian strata. 
Bull. 135 7 
