CONTENTS. 



Number 245. 



Page 



Art. XXVIII. — Effects in Mokuaweoweo of the Eruption 



of 1914; by H. O. Wood 383 



XXIX. — The Composition of Natural Bornite; by E. T. 



Aixkn ..- 409 



XXX. — Further Study of the Interference of Reversed 



Spectra; by C. Barus 414 



XXXI. — The Stratigraphic Position of the Hillsboro Sand- 

 stone ; by C. S. Prosser 435 



XXXII. — Bottom Control of Marine Faunas as Illustrated 



by Dredging in the Bay of Fandy; by E. M. Kindle.. 449 



SCIENTIFIC INTELLIGENCE. 



Chemistry and Physics — Manufacture of Gasoline and Benzene-Toluene from 

 Petroleum and Other Hydrocarbons,. W. F. Rittman, C. B. Button and 

 E. W. Bean: Rapid Method for the Betermination of Copper and Iron, 

 G. Edgar, 462. — Colorometric Betermination of Acetylene and its Applica- 

 tion to the Betermination of Water, E. R. Weaver: Belicate Test for 

 Copper, W. G. Ltle, L. J. Ctjrtman and J. T. W. Marshal, 463. — 

 Theory of Magnetism, R. Gans, 464. — Carriers of the Spectra of Hydro- 

 gen, J. Stark: Primary X-Ray Spectra of Iodine and Tellurium, M. 

 Siegbahn, 465. — Bistribution of Intensity in Broadened Spectrum Lines, 

 J. W. Nicholson and T. R. Merton: Magnetic Beclination in the United 

 States for January 1, 1915, B. L. Hazard, 466. 



Geology— Wisconsin Geological and Natural History Survey, E. A. Birge: 

 Canada, Bepartment of Mines, 467. 



Miscellaneous Scientific Intelligence — The National Academy of Sciences, 

 469. — The Northwest and Northeast Passages, 1576-1611, P. F. Alexan- 

 der : University of Washington, Bureau of Industrial Research : Summer 

 "Assembly in Science "at the Scripps Institution, La Jolla, California, 

 471. 



Obituary — J. W. Judd: H. C. Jones: E. Gerard: E. Heckel: J. W. 

 Richard, 472. 



