CONTENTS. 



Page 



Art. XXXVI. — A New Niobrara Toxochelys ; by G. R. 



Wieland. (With Plate X.) 325 



XXXVII. — Contributions to the Geology of New Hamp- 

 shire. I. Geology of the Belknap Mountains ; by L. 

 V. Pirsson and H. S. Washington. (With Plate XI.) 344 



XXXVIII.— The Fauna of the Chazy Limestone; by P. E. 



Raymond _.. 353 



XXXIX.— The Mechanical Properties of Catgut Musical 



Strings; by J. R. Benton 383 



XL. — Use of the Rotating Cathode for the Estimation of 



Cadmium taken as the Chloride ; by C. P. Flora 392 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics. — Formation of Ozone by Ultra-violet Light, Fischer 

 and Braemer : New Reagent for Nickel, Tschugaeff, 397:— Electrolytic 

 Dissociation Theory with some of its Applications : Soils and Fertilizers : 

 Engineering Chemistry, 398. — Text-book of Chemical Arithmetic : Text- 

 book of Physiological Chemistry for Students of Medicine-: Formation 

 of Helium from the Radium Emanation, 399. — Blondlot's " Emission 

 pesante" : Diffusion of Nascent Hydrogen through Iron, A. Winklemann, 

 400. — Landolt-Bornstein Physikalisch-chemischerTabellen, 401. 



Geology and Mineralogy. — United States Geological Survey, 402. — Osteology 

 of Baptanodon, C. W. Gilmore, 403. — Cambrian Fauna of India, C. D. 



. Walcott, 404. — Catalogue of Type-Specimens of Fossil Invertebrates in 

 the Department of Geology, U. S. National Museum, 405. — Graptolites of 

 New York ; Part I, Graptolites of the Lower Beds, R. Ruedemann : 

 Mesozoic Plants from Korea, H. Yabe : Paleontologia Universalis : Ninth 

 Annual Report of the Geological Commission, Dept. of Agriculture, Cape 

 of Good Hope, for 1904: Rock Cleavage, C. K. Leith, 406. —Experiments 

 on Schistosity and Slaty Cleavage, G. F. Becker : Die Alpen im Eiszeit- 



■ alter, 407. — Structural and Field Geology, J. Geikie : Clays and Clay 

 Industry of Connecticut, G. F. Loughlin, 408. — Geology of Western Ore 

 Deposits : Delavan Lobe of the Lake Michigan Glacier, etc., 409. — 

 Platinum in Black Sands from Placer Mines, D. T. Day: Cassiterite, W. 

 E. Hidden, 410. ' - 



Miscellaneous Scientific Intelligence. — Harvard College Observatory : Pub- 

 lications of the Cincinnati Observatory: Report of Director of the Yerkes 

 Observatory, Univ. of Chicago: Carnegie Institution of Washington, 411. 

 — Annual Report Board of Regents Smithsonian Institution : Catalogue 

 of Collection of Birds' Eggs in the British Museum of Natural History : 

 Bibliotheca Zoologica II, 412. 



Obituary. — Baron Ferdinand von Richthofen, Professor Leo Errera, Mr. 

 G. B. Buckton, M. Elisee Reclus, 412. 



TE\-VOLlJME INDEX. 



An extra number, containing a full Index to volumes XI to XX of the 

 Fourth Series, will be ready in December. Sent only to those who specially 

 order it. Price one dollar. 



