CONTENTS. 



Page 



Art. I. — The Motion of Ions and Electrons through Gases; 



by E. M. Wellisch.. _ _.. 1 



II. — Correlation of the Devonian Shales of Ohio and Penn- 

 sylvania; by W. A. Verwiebe _ _ 33 



III. — Evidence of Uplift on the Coast of New South Wales, 



Australia; by L. F. Harper 48 



lY. — The Use of the Platinized Anode of Glass in the Elec- 

 trolytic Determination of Manganese; by F. A. Gooch 

 and M. Kobatashi 53 



Y. — Preliminary Note on the Occurrence of Yertebrate Foot- 

 prints in the Pennsylvanian of Oklahoma ; by W. R. 

 JlLLSON . 56 



YI. — New Evidence of a Recent Yolcanic Eruption on Mt. 



St. Helens, Washington; by W. R, Jillsox __ _ 59 



YII. — Some Notes on Japanese Minerals; by S. Ichikav^a 63 



YIII. — The Retardation of Alpha Particles by Metals; by 



H. J. Yennes - - 1 69 



Arnold Hague _ 73 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Analysis of Pyrolusite and other Oxidized Manga- 

 nese Ores, O. L. Barneby and G. M. Bishop: The Life of Eobert Hare, 

 an American Chemist, E. F. Smith, 76. — A Course in Food Analysis, A. I. 

 WiNTON, 77. — A Text-Book of Sanitary and Applied Chemistry, E. H. S. 

 Bailey: Nature of Solution, H. C. Jones, 78. — Theory of Measurements, 

 L. Tuttle: Laws of Physical Science, E. F. Northrup, 79. 



Geology and Natural History— JJniiedi States Bureau of Mines, V. H. Man- 

 ning, 80. — Canada, Department of Mines, R. W. Brock and £. Haanel, 

 81. — Pennsylvania Glaciation, First Phase, E. H. Williajis, Jr. : Nebraska 

 Pumicite, E. H. Barbour: Guide to the Insects of Connecticut, Part III, 

 H. L. Viereck, etc., 83.— The Biology of Twins (Mammals), H. H. New- 

 man: The Theory of Evolution, W. B. Scott: A Chemical Sign of Life, 

 S. Tashiro, 84. —Fundamentals of Botany, C. S. Gager: A Laboratory 

 Guide for General Botany, C. S. Gager: Laboratory Manual of Agricul- 

 tural Chemistry, C. C. Hedges and W. T. Bryant, 85. — Manuring for 

 Higher Crop Production, E, J. Russell: A Manual of Organic Materia 

 Medica and Pharmacognosy, L. E. Sayre, 86. 



Obituary— Q. H. Stone: H. F. E. Jungersen, 86. 



