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LEFFINGWELL, E. de K. Ground-ice Wedges, the Dominant Form of 



Ground-ice on the North Coast of Alaska. Journ. Geol., Chicago, xxiii. 



pp. 635-654, figs. [geol. sections]. 1915. 

 LEGENDRE, A. F. Considerations generales sur les formes structurales 



de la Chine sud-occidentale et des Marches Thibetaines. C. R. Acad. 



Sci., Paris, clxi. pp. 737-740. 1915. [See also Depkat, J., 10.] 

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 . See also Pelourde, F., 1 & 2. 



LEHFELDT, R. A. Thermal Conductivity of Quartzite. S. Afr. Journ. Sci. 

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LEHMANN, V. Hekman de Peetz. [Obit,] Trav. Sec. geol. Cab. S.M., 



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 LEIGHTON, D. Report of an Excursion to Hindhead. Proc. Geol. Assoc. 



xxvi. pp. 88-89. 1915. 

 . See also Young, G. W., 6. 



LEIGHTON, M. M. The Pleistocene History of Iowa River Valley, North 

 and West of Iowa City in Johnson County. Iowa Qeol. Surv. xxv. pp. 

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. See also Alden, W. C. 



LEITCH, P. A., & A. Scott. Notes on the Intrusive Rocks of West Renfrew- 

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LEITH, C. K. Structural Geology. Pp. i-viii, 1-169, figs. [geol. sections]. 

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■ 2. Recrystallization of Limestone at Igneous Contacts. Trans. Am. 



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3. Conservation of Iron Ore. Ibid. liii. pp. 79-83. 1916. 



4. " War Minerals " as a Science. Econ. Geol. xiii. pp. 497-499. 1918. 



. See also Allen, R. C. 



5, & W. J. Mead. Metamorphic Geology. A Text-Book. Pp. i-xxiii, 



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 6, & . Metamorphic Studies. Convergence to Mineral Types in 



Dynamic Metamorphism. Journ. Geol., Chicago, xxiii. pp. 600—607. 1915. 

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Cuba. Trans. Am. Inst. M. E. liii. pp. 75-78, figs, [diagrams]. 1916. 

 LEITMEIER, H. Der heutige Stand der Dolomitfrage. Min. petr. Milt. 



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. See also Doelter, C, 2. 



LE MAIRE, L. Obit. —See Madsen, V., 1. 



LEMOINE, E. Le Massif Jurassique de Curienne-La Thuile. Contribution 



a l'etude des chaines subalpines de la Savoie. Bull. Soc. Hist. nat. Savoie, 



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 LEMOINE (Madame) Paul. Sur quelques Corallinaceas trouvees dans un 



calcaire de formation actuelle de l'ocean Indien. Bull. Mus. Hist. nat. 



Paris, xxiii. pp. 130-132. 1917. 

 LEMOINE, P. Geologie du Bassin de Paris. Pp. i-ii, 1-408, figs. & pis. i-ix 



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xliii. Le Havre, 1914, pp. 391-398, fig. [topogr. map]. 1915. And A.C. 

 3. La geologie souterraine du sud de l'Angleterre. Bull. Soc. Philomath . 



Paris, ser. 10, viii. pp. 25-39, figs. [geol. map & sections]. 1916. A.C. 

 . See also Cottreau, J., 2. 



LENCEWICZ, S. Etude sur le Quaternaire du Plateau de la Petite Pologne. 



Pp. 1-105, figs. & geol. map. 8vo. Neuchatel, 1916. 

 LENHER, V. The Oxidation of Manganese Solutions in Presence of the Air. 



Econ. Geol. xi. pp. 115-117. 1916. 

 2. Further Studies on the Deposition of Gold in Nature. Ibid. xiii. 



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 LENORMAND, C. See Galaine, C, 2. 

 LEON, -r-. See Mettrier, — . 



LEON, J. M. Y. Yac imientos carboniferos do las provinciaa do Pallasca, 



Huaylas, y Yungay. Bol. Ing. Minas, Peru, no. 90, pp. 1-85, figs. & 



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 LEONARD, A. G. Pleistocene Drainage Changes in Western North Dakota. 



Bull. Geol. Soc. Am. xxvii. pp. 295-304, fig. [map] & pi. xiv. 1916. 

 2. The Prc-Wisconsin Drift of North Dakota, Journ. Geo/., Chicago, 



xxiv. pp. 521-532, figs, [topogr. map]. 1916. 



