IV CONTENTS. 



Number 194. 



Art. X. — Study of Some American Fossil C} r cads — Part 

 VI. On the Smaller Flower-Buds of Cycadeoidea ; by 

 G. R. WlELAND 73 



XI. — Occurrence of Coral Reefs in the Triassic of North 



America ; by J. P. Smith 92 



XII. — Ordovician Outlier at Hyde Manor in Sudbury, Ver- 

 mont ; by T. N. Dale r I 97 



XIII. — Color-Effect of Isomorphous Mixture ; by H. L. 



Wells . _. _, 103 



XIV. — Lorandite from the Rambler Mine, Wyoming ; by 



A. F. Rogers . 105 



XV. — Rate of Decay of Different Sizes of Xuclei, Deter- 

 mined by Aid of the Coronas of Cloudy Condensation ; 

 by C. Barus 107 



XVI. — Displacement Interferometer Adapted for High Tem- 

 perature Measurement, Adiabatic Transformations of a 

 Gas, etc. ; by C. Barus ■ 109 



XVII. — Unconformity at the Base of the Chattanooga Shale 



in Kentucky; by E. M. Kindle 120 



XVIII. — Suggestion for Mineral Nomenclature ; by H. S. 



Washington 137 



XIX. — Optical Resolution of the Saturnian Ring ; by D. 



Todd \... 152 



Chemistry and Physics — Canadium, an Alleged New Element of the Platinum 

 Group, A. G. French : Alleged Complexity of Tellurium, Harcourt and 

 Baker, 155. — New Quantitative Separation of Iron from Manganese, J. A. 

 Sanchez : Famous Chemists, E. Eoberts, 156. — Quantitative Chemical 

 Analysis, Clowes and Coleman : Photometric Paddle-Wheels, J. B. 

 Milne: Text-Book of Physics, L. B. Spinney, 157. —Tables of Physical 

 and Chemical Constants and some Mathematical Functions, G. W. C. 

 Kaye and T. H. Laby : Electrochemische Umformer, J. Zacharias, 158. 

 — Neue Welt der Fliissigen Kristalle, O. Lehmann, 159. 



Geology and Natural History — Thirty-second Annual Eeport of the United 

 States Geological Survey, G. O. Smith, 159.— Granites of Connecticut, T. 

 N. Dale and H. E. Gregory, 160. — The Mount McKinley Eegion, Alaska: 

 Bulletin of the Seismological Society of America, 161. — Atlas Photo- 

 graphique des Formes du Eelief Terrestre, J. Brunhes, E. Chaix, E. de 

 Martonne : New Zealand Botanical Notes, B. C Aston, 163.— Fungous 

 Diseases of Plants, B. M. Duggar : Practical Botany, J. Y. Bergen and 

 O. W. Caldwell : A Practical Course in Botany, E. F. Andrews, 164. 



Miscellaneous Scientific Intelligence — Eeport of the Secretary of the Smith- 

 sonian Institution, 165. — Eeport of the Librarian of Congress and Eeport 

 of the Superintendent of the Library Building, 166. — Das Schicksal der 

 Planeten, S. Arrhenius : The Capture Theory of Cosmical Evolution, T. 

 J. J. See, 167. -The Teaching of Geometry, D. E. Smith : The Hindu- 

 Arabic Numerals, D. E. Smith and L. C. Karpinsky, 168. 



Obituary— C. E. Dutton. 



