INDEX TO VOLUME 21 



811 



Page 

 Lawson, a. C, Establishment by Con- 

 gress of a National Bureau of Seis- 

 mology proposed by 794 



Launey de, M. L., Tertiary rift placed 



by 209 



Laurentian granite, Occurrence of . . . . 683 



Ladteeback, , cited on orogenic 



movement in western Nevada 554 



LelorhyncliKS greeneanum (Ulricb), Fig- 

 ure showing and description of . . . . 511 



— Hall 511 



Lb Perle creek, Wyoming, Natural 



bridge at 320 



Leperditella, n. sp., Fossil of the quart- 



zite at Geneva 527 



Leverett^ Frank, cited on the beach 



of lake Warren 239 



f ossilif erous beds of Whirlpool 



drift and Scarboro heights 439 



glacial formations and drain- 

 age features of the Erie and Ohio 

 basins 238 



till overlying Birds Hill esker 



gravel and sand 414 



the Illinois glacial lobe 237 



— ; Glacial investigations in the lake 



Superior region in 1909 21, 762 



— , "Hinge line" suggested by 239 



— quoted on departure from horizon- 



tality in Michigan 241 



uplift of lake Erie beaches 238 



— , Reference to weathered zones and 



till sheets described by 631 



LfiVT, IMiCHEL, Reference to 114 



Librarian for 1910, H. P. Gushing 



elected 3 



Life members, Number of 38 



Lime-alkali eruptives, Occurrence of . . 89 

 Limestone and granite contacts. Bleach- 

 ing of 33, 786 



— , Foyaitic phase of the pre-Cambrian 

 granitic batholiths found at contact 

 with 91 



— or dolomite a flux for basalt 109 



— overthrusts, Wasatch range carbon- 



iferous 537 



— plains of the interior of Bahia, Bra- 



zil ; J. C. Branner 790 



— regions, Reference to Kingston, Ten- 



nessee, and Bristol, Virginia 331 



Limestones, Association with alkaline 



rocks of 91 



LinguUdiscina utahensis, Fossil of Wa- 

 satch region 530 



List of officers and members of the 



Paleontological Society 83-86 



LiTHOiDAL rhyolite, Yellowstone natural 



bridge composed of 322 



LiTHOLOGic changes. Differences in 



fauna not accounted for by 289 



Livingston beds of central Montana, 



Stratigraphic relations of the. . 31, 781 



Loewinson-Lessing, F., cited in discus- 

 sion of alkaline rocks 88 



— quoted on views given at Saint Pe- 



tersburg congress . r 117 



— , Word "syntectics" adapted from... 90 

 L0GAN3 Sir William, cited on thickness 

 of Chazy and Black River forma- 

 tions of the Mingan series 688 



— quoted on composition of strata be- 



tween Mingan and Anticosti is- 

 lands 682 



dip of the Mingan Island re- 

 gion 681 



Mingan Island nhenomena .... 686 



— , Reference to stratigraphy of the 



Mingan and Anticosti sections of. . 681 



Lookout mountain, Tennessee, Natural 



bridge at 327, 329 



Page 



LooMis, F. B., elected Fellow 3 



— ; Phylogenetic position of the genus 



Stegomylus 75 



— and Amadeds W. Grabau ; Ontogeny 



and paleontology 74 



LouDERBACK, G. D., elected Secretary 



of Cordilleran Section 790 



— , Paper of C. H. Hitchcock read by . . 741 

 — ; Secondary pseudostratification in 



Santa Barbara county, California. 



(Abstract.) 791 



— and W. C. Blasdale ; Ruby corun- 



dum from San Bernardino county, 

 California. (Abstract.) 793 



LoWj A. P., elected Second Vice-Presi- 

 dent 3 



Lull, R. S., elected Fellow 3 



— ; Restoration of paleolithic man .... 75 

 — ; The armor of Stegosaurus 75 



— and William H. Dall ; Embryology 



and paleontology 74 



LuSTOSA, JoAQUiM, quoted on lumi- 

 nosity of termites 495 



Lyell, Sir Charles, cited on Rich- 

 mond boulder trains 747 



the Whirlpool-Saint Davids val- 

 ley 433 



Lynn Beach, Massachusetts, Beach 



cusps at 600 



McAdie, a. G., Reference to his catalog 



of earthquakes on the Pacific coast 405 

 McCallie, Samuel Washington, 



elected Fellow 4 



MacDougal, , Gypsum sand de- 

 posits described and analyzed by.. 647 

 McGee, W J, cited on coastal plains of 



Sonora, Mexico 571, 583 



— "cloud-burst" effects 572 



loess from Muscatine, Iowa... 639 



sheetflood erosion 575 



■ — Sonoran district of northern 



Mexico 556 



— , Term "eolation" first defined by. . . . 580 



McGregor, Neil J., Depth of Birds 



Hill esker shown by well of 421 



Mackie, , cited on glacial sand 628, 631 



laws governing the rounding 



of sand particles 633, 638 



— • — ■ — "The sands and sandstones of 



eastern Moray" 634, 637 



— , Table showing the relative capacity 



of minerals to be rounded by 634 



McNair, F. W. ; Note on a method in 



teaching optical mineralogy 31 



Macronotella, n. sp.. Fossil of the quart- 



zite at Geneva 527 



Magnesium and calcium metasilicate, 

 Diagram showing relation between, 

 figure 7 172 



Magnetograph, Valuable instrument for 



earthquake records 382 



Magma, Effects of the solution of car- 

 bonates in subalkaline 108 



Magmas, Subalkaline rocks genetically 



connected with subalkaline 90 



Magothy formation of the Atlantic 



coast ; A. B. Bibbins 30, 780 



Malay earth-lobe and the Himalaya re- 

 entrant, Contrasted forms of. . 191-195 



Malouin, Alfred, Acknowledgments to 681 



Mammalian fauna, Aftonian 120 



Man, Paleontology of 74 



— , Restoration of paleolithic 75 



Manitoba, Birds Hill : An esker near 



Winnipeg 26, 407-432 



Mansfield, G. R., elected Fellow 4 



— ; Origin of Cliff lake, Montana.. 26.764 



