June 27, 1902.] 



SCIENCE. 



1031 



' The Expansion of a Gas into a Vacuum and 

 the Kinetic Theory of Gases ' : Peter Fireman-. 



' Quantitative Blowpipe Analysis by Bead Col- 

 orations ' : Joseph W. Richauds. 



' Solubility, Electrolytic Conductivity, and 

 Chemical Action in Liquid Hydrocyanic Acid ' : 

 Loxns Kahlenbekg and Herman Sohlundt. 



' Determination of Glucose ' : Edward Gtjde- 



MAN. 



' Gluten Feed Analyses ' : Edward Gtjdeman. 



' Arsenic Pentachloride ' : Charles Basker- 

 viLLE and H. H. Bennett. 



' Black Rain in North Carolina ' : Charles 

 Baskerville and H. R. Weller. 



' A New Method for the Preparation of Pure 

 Praseodymium Compounds ' : Charles Basker- 

 ville and J. W. TURRENTINE. 



' Deportment of Pure Thorium and Allied Ele- 

 ments with Organic Bases ' : Charles Basker- 

 ville and F. H. Lemlt. 



' A New Constant High Temperature Bath ' : 

 Charles Baskerville. 



' A Process for Rendering Phosphoric Acid 

 Available ' : Charles Baskerville. 



'Molecular Attraction': J. E. Mills. (By 

 title.) 



' Condensation of Chloral with the Nitrani- 

 lines ' : A. S. Wheeler and H. R. Weller. 



' The Composition of Urine and its Relation to 

 Electrical Conductivity': John H. Long. (By 

 title.) 



' Symmetrical Trimethylbenzyl, Symmetrical 

 Trimethylbenzol Hydrazone and some of its De- 

 rivatives ' : Everhart p. Harding. 



' 1. 4. Dimethylbenzyl, 1. 4. Dimethylbenzol 

 Hydrazone and some Derivatives ' : Everhart 

 P. Harding. 



' The Action of Valerianic Acid and Valeric 

 Aldehyde upon Antipyrin ' : David C. Eccles. 



' On Conductivity ' : George A. Hulett. 



' Relation between Negative Pressure and Os- 

 motic Pressure': George A. Hduett. (By 

 title.) 



' Comparison of Results Obtained by Different 

 Methods of Determining the Amount of Oxygen 

 Absorbed by Waters Containing Oxidizable Sub- 

 stances ' : Leonard P. Kinnicutt. 



' The Old and the New in Steel Manufacture ' : 

 Wm. Metcaij". 



' Some Notes on Glass and Glass Making ' : 

 Robert Linton. 



' Manufacture of Optical Glass ' : George A. 

 Macbeth. 



' Bessemer and Open-Hearth Steel Practice ' : 

 Edward H. Martin and Wm. Bostwick. 



' Malleable Iron ' : H. E. Diller. 



' Manufacture of Plate Glass ' : Francis P. 

 Mason. 



' Manufacture of White Lead ' : Ger.ird 0. 

 Smith. 



' Camphoric Acid : Synthesis of Trimethylpara- 

 conic Acid ' : W. A. Notes and A. M. Patter- 

 son. 



' The Hydrolysis of Maltose and Dextrine for 

 the Determination of Starch ' : W. A. Noyes, 

 Gilbert Crawford, C. H. Jumper, E. L. Flort. 



' Crucible Steel Manufacture ' : E. L. French. 



SECTION D, mechanical SCIENCE AND ENGI- 

 NEERING. 



' The Trend of Progress in Prime Movers ' : 

 Director R. H. Thurston, Cornell University. 



' On Changes in Form as an Essential Con- 

 sideration in the Theory of Elasticity ' : Mr. 

 Frank H. Cillet, Brooklyn. 



' On the Advantage of Siamesed Hose Lines for 

 Fire Steamers ' : Professor Mansfield Merri- 

 MAN, Lehigh University. 



' The Nomenclature of Mechanics ' : Professor 

 R. S. Woodward, Columbia University. 



' U. S. Work in the Ohio, Allegheny and Monon- 

 gahela Rivers near Pittsburg ' : Mr. Thomas P. 

 Roberts, Pittsburg. 



' On a Type of Planetary Orrery Using the 

 Mechanical Principle of the Conical Pendulum ' : 

 Professor David P. Todd, Amherst College. 



' On the Ratio of the Transverse to the Longi- 

 tudinal Elastic Strain Produced by Longitudinal 

 Stress ' : Professor Thomas Gray, Rose Poly- 

 technic Institute, Terre Haute, Ind. 



' On the Effect of Hardening Steel on its 

 Young's Modulus ' : Professor Gray. 



' A Test of a Ball Thrust Bearing ' : Professor 

 Gray. 



' A New Photometer, with Exhibition of the 

 Instrument ' : Professor C. P. Matthews, Pur- 

 due University. 



' The Mechanics of Reinforced Concrete Beams ' : 

 Professor W. K. Hatt, Purdue University. 



' Some Experiences with a Simple Babbitt Test- 

 ing Machine ' : Mr. E. S. Farwell, New York 

 City. 



' The Rules and Regulations Concerning Air- 

 ship Contests at the Louisiana Purchase Fair ' : 

 Professor C. M. Woodward, Washington Univer- 

 sity, St. Louis. 



' Long Distance Electric Transmission Regarded 

 as a Hydrodynamic Phenomenon ' : Professor H. 

 T. Eddy, University of Minnesota. 



' The Effect of Weeds and Moss upon the Co- 



