LAPWORTH- 



-LAWSON 1*51 



Page 



Lapworth, C, cited on graptolite shales 28, 959 



— , Reference tti "On the Balhmtree rocks of south Scotland and their 



place in the Upland Sequence" of 27, 575 



Laramie and Lance, TJnconforniity between 25, 401 



— llora of southwestern Wyoming ; K. IL Knowlton 21. 75 



— formation and the Raton Mesa region 24, 114 



" — •' formation ( ?) , Colorado and New Mexico 23, G07 



, Flora of the 25, 331-333 



" — ?" Puerco and Torrejon in the San Juan basin, New Mexico; W. J. 



Sinclair 25, 138 



— unconformity in the Denver basin 25, 347 



Large rock slide in the Wind River Mountains of Wyoming; E. B. 



Branson 28, 149 



Larsen, E. S., cited on allanite 28, 480 



— — — rock specimens 27, 199 



Lassen Peak, California, Recent eruptions of; J. S. Diller 26, 105 



_ — ^ eruptions of May 20-22, 1915, Characteristics of the ; R. S. Holway 



and J. S. Diller 26,-397 



Las Vegas, New Mexico, and Wichita Falls, Texas, Relation of verte- 

 brate fauna in Red Beds between 2-1, 52, 679 



Late Mississippian orogenic mo , ements in North America ; F. M. Van 



Tuyl and R. C. Moore 30, 88 



— Pleistocene shoreline in Maine and New Hampshire; F. J. Katz.... 29,74 



— Precambrian deserts , 27, 182 



ice age 27, 186 



Later Tertiary formations of western Nebraska ; W. D. Matthew 28, 197 



Latest theories regarding the origin of oil ; D. White 28, 157, 727 



Laurentian ice-body of Adirondacks 27, 647 



— (Labradorian) ice-body, Limits, thickness, movement, and recession 



in New York State of the 24, 135-137 



Lava, Explanation of the formation of Aa 24, 509 



— • flows. Region of Toylane and Lucero 23, 716 



— from Kilauea and Halemaumau craters. Analyses tables of 24,586 



— of Starks Knob, Position of 24, 347 



— province, British East Africa 23, 304 



Lavas and sedhnentaries of Kittitas County, Washington, Relation be- 

 tween the Tertiary 26, 137 



— (Brun) , Explosive 24, 601 



— of Hawaii and their relations ; Whitman Cross 24, 54, 684 



Laws governing sedimentation 25, 732-737 



Lawson, a. C, Acting Chairman Summer ^Meeting, Session August 4, 



1915 26, 393 



— (Attention called to work of W. F. Jones in the Coalinga region by. 24. 129 

 — , J. P. Bulwada introduced l)y 26, 403 



— cited on anorthosite 29, 409 



■ California chert formations 28, 831 



erosion of Kern River country 27, 46 



magmatic assimilation 25, 261 



XI — Bull. Geol. Soc. Am. 



