252 Scientific Intelligence. 



H. S. Carhart: The design, construction and test of a 1250-Watt transformer. 

 K. E. Guthe : Electrolytic action in a condenser. 



H. T. Eddy: Graphical treatment of alternating currents in branch circuits in 

 cases of variable frequency. 



A. Macfarlane : On simple non-alternating currents. 

 L. A. Bauer : Magnetic survey of Maryland 



R. L. Litch : New method of determining the specific heat of liquids. 



G. L. Moler and E. Bedell: Instruments for determining the frequency of an 

 alternating current. 



W. J. Humphreys: Effect of pressure on the wave-lengths of the lines of the 

 emission spectra of the elements. 



C. L. Norton 1 : New form of coal calorimeter. 



C. R. Cross : Notes on the recent history of musical pitch in the U. S. 



E. A. Laws: New form of harmonic analyzer. 



N. E. Dorsey: Determination of the surface tension of water, and of certain 

 aqueous solutions, by means of the method of ripples. 



F. H. Big-elow: Series of international cloud observations made by the U. S. 

 Weather Bureau, and their relation to meteorological problems. 



C. F. Marvin : Kites and their use by the Weather Bureau in explorations of 

 the upper air. 



B. B. Brackett: Effects of tension and quality of the metal upon the changes 

 in length produced in iron wires by magnetization. 



E. W. Morley and D. C. Miller : On the coefficient of expansion of certain 

 gases. 

 E. F. Nichols: Note on the construction of a sensitive radiometer. 



E. L. Nichols and E. Merritt: Photograph of manometric flames. 



G. W. Patterson, Jr. : Electrostatic capacity of a two-wire cable. 



C. P. Steixmetz ; Screening effect of induced currents in solid magnetic bodies 

 in an alternating field. 



Carl Barus : Rate at which hot glass absorbs superheated water. Method of 

 obtaining capillary canals of specified diameter. 



F. Bedell, R. E. Chandler and R. H. Sherwood, Jr. : Predetermination of 

 transformer regulation. 



W. R. Whitney : An electrical thermostat. 



W. 0. At water and E B. Rosa: Apparatus for testing the law of conserva- 

 tion of energy in the human body. 



E. B. Rosa and A. W. Smith : Electrical resonance and dielectric hysteresis. 

 Margaret E Maltby: Method for the determination of the period of electrical 



oscillations and other applications of the same. 



C. P. Matthews : Two methods of measuring mean horizontal candle power. 



Section C. Chemistry. 



A. B. Prescott: Alkyl bismuth iodides. Kola tannin. 

 J. U. Nef: Chemistry of methylene. 



P. C. Freer : Action of sodium on methylpropylketon and on acetophenon. 

 Constitution of some hydrazones. 



A. W. Burwell: Decomposition of heptane and octane at high temperatures. 



F. J. Pond and F. F. Beers : Derivatives of euganol. 



E. W. Morley: Determination of the volatility of phosphorus pentoxide. 



L. M. Dennis: Recent progress in analytical chemistry. New form of dis- 

 charger for spark spectra of solutions. 



A. L. Green: Qualitative analysis: a point in teaching that was not a full 

 success. 



Ellen H. Richards: A new color standard for use in water analysis. Contri- 

 butions from the laboratory of water analysis. 



L. M. Dennis and C. G. Edgar: Comparison of methods of determining carbon 

 dioxide and carbon monoxide. 



E. D. Campbell and F. Thompson: Preliminary thermo-chemical study of 

 iron and steel. 



E. D. Campbell and S. C. Babcock: Influence of heat treatment and carbon 

 upon the solubility of phosphorus in steel. 



