54 BIBLIOGRAPHY AND INDEX OF N. A. GEOLOGY, [bull. 146. 
294 Leverett (Frank). On the correlation of New York moraines 
with raised beaches of Lake Erie. 
Am. Jour. Sci., 3d ser., vol. 1, pp. 1-20. 
Presents a map of western New York showing the distribution of the 
moraines. Describes the Sheridan and Crittenden beaches and their 
probable correlative moraines in New York, and the character of the 
country inside (northeast of) the Lockport moraine. 
295 Pre- Glacial valleys of the Mississippi and tributaries. 
Jour, of Geol., vol. iii, pp. 740-763. 
Describes the courses of the main pre-Glacial drainage lines of the 
northern portion of the Mississippi basin, compares the elevation and 
slope of the pre-Glacial valley floors, and discusses the age and develop- 
ment of the pre-Glacial valleys. 
290 Lindgren ( Waldemar). Characteristic features of California gold- 
quartz veins. 
Geol. Soc. Am., Bull., vol. vi, pp. 221-240, pi. 11. 
Describes the geographic distribution, geologic relations, and age Of 
the gold-quartz veins in California. Discusses the structural relations 
of the veins and describes the association of minerals, the distribution 
of the gold and the alteration of the country rock. Includes a discus- 
sion of the origin of gold and a summary of conclusions. Accompanied 
by a map of California showing the location of the goid-quartz veins. 
297 and Turner (H. W.). Marysville folio, California. 
U. S. Geol. Surv., Geol. Atlas of the U. S., folio 17. 
Describes the topography of the region, the characters of the Pleisto- 
cene deposits and of the igneous rocks of Marysville buttes and the 
occurrence of gold-bearing gravels, coal, and natural gas. Includes topo- 
graphic, colored areal geologic, economic geologic, and structure section 
maps. 
298 Smarts ville folio, California. 
U. S. Geol. Surv., Geol. Atlas of the U. S., folio 18. 
Gives a general description of the gold belt of California and a gener- 
alized columnar section of tbe formations of the region. Describes its 
topographic features, the character and distribution of the Carboniferous 
rocks and of the igneous rocks, including porphyrite, diabase, granodi- 
orite, gabbrodiorite, and amphibolite, and discusses the age of the 
igneous rocks. Describes the Neocene and Pleistocene formations, the 
associated flows of rhyolite and andesite, and the occurrence of auriferous 
gravels, gold quartz veins, copper, quicksilver, iron, building stone, and 
soils. Includes topographic, colored areal geologic, economic geologic, 
and structure section maps. 
299 Lonsdale (Elston Holmes). Geology of Montgomery County 
[Iowa]. 
Iowa Geol. Surv., vol. iv., 3d Ann. Rept., pp. 385-451, pis. x-xi, figs. 
46-54, with geologic map. 
Describes the physiography of the county and the distribution, stratig- 
raphy, and lithology of the Carboniferous, Cretaceous, and Pleisto- 
cene formations. Gives sections of typical localities, and describes the 
occurrence of building stone, clay, coal, road materials, soils, and water 
supply. 
