156 



THE AMERICAN NATURALIST [Vol. XL 



The relation between rainfall and run-off, under different climatic 

 conditions, is very clearly brought out in many of the tables. 



The "Report of Progress of Stream Measurements for the Cal- 

 endar Year 1904'' forms Water Supply and Irrigation Papers 124- 

 135 inclusive. The various portions of the country are treated in 

 the separate bulletins, as follows: — 



124, Pt. 1, Atlantic Coast and New England Drainage. 



125, " 2, Hudson, Passaic, and Delaware River Drainages. 



126, " 3, Susquehanna, Patapsco, Potomac, James, Roanoke, 

 Cape Fear, and Yadkin River Drainages. 



127, Pt. 4, Santee, Savannah, Ogeechee, and Altamana Rivers, 

 and Eastern Gulf of Mexico Drainage. 



128, Pt. 5, Eastern ISIississippi River Drainage. 



129, " 6, (in at Lakes and St. Lawrence River Drainage. 



130, " 7, Hu.lx.ii i?ay. Minnesota, Wapsipinicon, Iowa, Des 

 Moines, and Missouri Uivci' Drainages. 



131, Pt. 8, Platte, Kansas, Meramee, Arkansas, and Red River 

 Drainages. 



132, Pt. 9, Western Gulf of Mexico and Rio Grande Drainages. 



133, " 10, Colorado River and the Great Basin Drainages. 



134, " 11, The Great Basin and Pacific Ocean Drainage in Cali- 



135, Pt. 12, Columbia River and Puget Sound Drainages. 



A new term applying to veins, namely "rift-veins," is proposed 

 by J. A. Reid, in a paper entided "The Structure and Genesis of 

 the Comstock Lode" {University of California, Bulletin of the Depart- 

 ment of Geology, vol. 4, no. 10, pp. 177-199). The type of this kind 

 of vein is the Comstock, where "the surface 'east vein,' the famous 

 bonanza, and the 'vein' now being worked have an identical origin. 

 Their formation lies in the fact that the lower part of the hanging 

 wall block has settled more than the upper, relative to the foot wall, 

 and has been torn apart by the stresses (leve1o])ed." 



lowing articles: ''Thr ( irofrraplu.al ('vrh- in an Ari.l ('liuialr," bv 

 W. M. Davis; '•Xnt..s on Hakc.l Clays'an.l Natural Sla-> in Kast.'ni 



ProsM.r; ^ Mrr/arrmp. f>,ln-i[ -a NVw Sp.M■i!^^.)t• Tilan!,thnv fn.u. tin- 

 Bad Lauds of South Dakota," by R. S. Lull; "( ommeut on the 

 'Report of the Special Committee on the Lake Superior Region,'" 

 by A. C. Lane. 



