Vlll CONTENTS. 



Number 276. 



Page 

 Art. XX XVI. — The Origin of Serpentine, a Historical and 



Comparative Study; by W. N. Benson... 693 



Art. XXXYII. — Stratigraphy and Correlation of the Devo- 

 nian <»f Western Tennessee; by C. O. Dunbar 732 



Richard Rathbun and His Contributions to Zoology _ 757 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Notes on Isotopic Lead, F. W. Clarke: Recovery of 

 Potash and Other Materials from Kelp, C. A. Higgins, 764. — Treatise on 

 Applied Analytical Chemistry, V. Villavecchia : Outlines of Theoreti- 

 cal Chemistry. K. H. Getman, 765 — Electro- Analysis. E. F. Smith: 

 Absorption of X-Rays in Aluminium and Copper, C. M. Williams, 766. 

 — Flame and Fnrnace Spectra of Iron, G. A. Hemsalech, 767. — Pub- 

 lications of the American Astronomical Societ} 7 , 768. 



Geology— Maryland Geological Survey, E. B. Mathews, 768. — San Lorenzo 

 Series of Middle California. B. L. Clark : West Virginia Geological 

 Survey, I. C. White. 769. -The Evolution of the Earth and its Inhabi- 

 tants. J Barrell, C. Schuchert, L. L. Woodruff, R S. Lull, and 

 K. Huntington : Equidse of the Oligocene, Miocene, and Pliocene of 

 North America, lconographic type revision, H. F. Osborn, 770. — The 

 genus Homalonotus, F. R. C. Reed, 771. 



Miscellaneous Scientific Intelligence — Dispensaries, their Management and 

 Development. M. M. Davis, Jr., and A. R. Warner, 771. — Principles 

 and Practice of Filling Teeth, C. N. .Iohnson : A Study of Engineering 

 Education, C. R. Mann : National Academy of Sciences, 772. 



Index to Volume XLVI, 773. 



