832 INDEX TO VOLUME XXII 



PAGE 



Lahee, Frederic H. Crystalloblastic Order and Mineral Development 



in Metamorphism 500 



Larsen and Merwin. Mixtures of Amorphous Sulphur and Selenium 

 as Immersion Media for the Determination of High Refractive 

 Indices with the Microscope. Review by A. J. . . . . 532 



Late Paleozoic Alkaline Igneous Rocks of the West of Scotland, The. 



By G. W. Tyrrell. Review by Albert Johannsen . . . . 627 



Leigh ton, M. M. Review of Underground Water Resources of Iowa, 



by W. H. Norton and Others . . . ... . . . 630 



Leiss, C. Neues petrographisches Mikroskop fiir die Thgodolit- 



Methode. Review by A. J 438 



. Ueber zwei neue Mikroskope fiir petrographische und krys- 



talloptische Studien. Review by A. J 438 



Leith, C. K. Structural Geology. Review by R. T. C. . . . 91 



Liesegang, Raphael. Geologische Diffusionen. ReviewbyR. C.Wallace 94 



Lloyd, E. R. Review of Kragerite, a Rutile-bearing Rock from Krage- 



roe, Norway, by Thomas L. Watson 628 



Loewinson-Lessing, F. Beitrage zur Systematik der Eruptivgesteine, I. 



Review by Albert Johannsen 439 



Louderback, George D. Review of Manual of Petrographic Methods, 



by Albert Johannsen 281 



Loughlin, G. F. Contribution to the Geology of the Boston and Norfolk 

 Basins, Massachusetts. I. The Structural Relations between the 

 Quincy Granite and the Adjacent Sedimentary Formations. Re- 

 view by A. J 439 



McLintock, W. F. P. Guide to the Collection of Gemstones in the 



Museum of Practical Geology. Review by A. J. . . . 529 



Manual of Petrology, A. By F. P. Mennell. Review by Albert 



Johannsen 529 



Mead, W. J. Some Geological Short-Cuts. Review by A. J. . . 529 



. The Average Igneous Rock 772 



Measurements of the Rigidity of the Earth, Preliminary Results of. 



By A. A. Michelson 97 



Mechanics of Formation of Arcuate Mountains. By William H. Hobbs 



71, 166, 193 

 Media of High Refraction for Refractive Index Determinations with the 



Microscope; Also a Set of Permanent Standard Media of Lower 



Refraction. By H. E. Merwin. Review by A. J 531 



Mennell, F. P. A Manual of Petrology. Review by Albert Johannsen 529 

 Merriam, John C. Review of The Osteology of the Chalicotheroidea, 



by W. J. Holland and O. A. Peterson 818 



Merrill, George P. On the Supposed Origin of the Moldavites and 



Like Sporadic Glasses from Various Sources. Review by A. J. . 530 



