292 



SCIENCE. 



[N. S. Vol. XVI. No. 399. 



often sufficiently large to cause serious error 

 in the determination. 



The following papers were also read: 



' Bessemer and Open-hearth Steel Practice ' : 

 Edwabd H. Maktin and Wm. Bostwick. 



'Manufacture of Optical Glass': Geo. A. Mac- 

 Beth. 



' The Ozone from Potassium Chlorate ' : Ed- 

 ward Hart. (By title.) 



' Malleable Iron ' : H. E. Diller. 



' The Old and the New in Steel Manufacture ' : 

 Wm. Metcaxf. 



• The Exactness of Faraday's Law ' : T. W. 

 Richards. 



' Ionic Velocities in Liquid Ammonia Solution ' : 

 E. C. Franklin. 



' Solubility, Electrolytic Conductivity, and 

 Chemical Action in Liquid Hydrocyanic Acid ' : 

 Louis Kahlenberg and Herman Schlundt. (By 

 title.) 



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

 title.) 



' A New Apparatus for Measuring the Coeffi- 

 cient of Expansion of Gases ' : T. W. Richards 

 and K. L. Mark. 



' Electrolytic Deoxidation of Potassium Chlo- 

 rate': Wilder D. Bancroft. (By title.) 



' The Solid Phases in Certain Alloys ' : Wilder 

 D. Bancroft. (By title.) 



' Otto Hoffman By-product Coke ' : C. G. At- 

 watee. 



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



' A Proposed Distillation Test for Fireproofed 

 Wood': C. F. McKjenna. (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. (By title.) 



' An Improved Grinder for Analyses of Mother- 

 beets ': David L. Davoll, Jr. (By title.) 



'Electric Combustion': Edward Hart. (In 

 abstract. ) 



' The Retention of Arsenic by Iron in the Marsh 

 Test ' : C. L. Parsons and M. A. Stewart. 



' A New Electric Test Retort ' : Chas F. Mc- 

 Kenna. (By title.) 



• The Distribution of Hydrogen Sulphide to 

 Laboratory Classes ': C. L. Parsons. (By title.) 



' The Hydrolysis of Maltose and Dextrine for 

 the Determination of Starch': W. A. Notes, G. 

 Crawford, C. H. Jumper and E. L. Flory. 



'Some Notes on Glass and Glass Making': 

 Robert Linton. 



' Plate Glass Manufacture': F. P. Mason. (By 

 title.) 



' Symmetrical Trimethylbenzyl, Symmetrical 

 Trimethylbenzol Hydrazone and some of its 

 Derivatives ' : Everhardt P. Harding. 



' 1-4-Dimethylbenzyl, 1-4-Dimethylbenzol Hydra- 

 zone and some Derivatives ' : Everhart P. Hard- 

 ing. 



' The Action of Valerianic Acid and Valeric 

 Aldehyde upon Antipyrin': David C. Eccles. 

 (By title.) 



' A Chemical Study of the Pitch of the Northern 

 Pine ' : G. B. Frankfortek. 



' Derivatives of Eugenol ' : G. B. Frankforteb 

 and Max Lando. 



'The Reaction of Bromine upon Oxalic Acid': 

 T. W. Richards and W. N. Stull. (By title.) 



' Isomeric Oxy-Azocompounds ' : W. McPheeson. 

 (By title.) 



' Reaction between Acid and Basic Amides in 

 Solution in Liquid Ammonia ' : E. C. Franklin 

 and 0. F. 'Stafford. 



' Pieryl Derivatives of some Phenols ' : H. W. 

 Hillter. (By title.) 



' Camphoric Acid : Synthesis of Trimethylpara- 

 conic Acid ' : W. A. Notes and A. M. Patterson, 



' Recent Progress in the Fireproofing Treatment 

 of Wood': S. P. Sadtler. (Will be printed in 

 Science. ) 



'Manufacture of White Lead': G. 0. Smith. 



' On some Expansion Measurements of Portland 

 Cement': E. D. Campbell. (By title.) 



' The Probable Existence of a New Carbide of 

 Iron ' : E. D. Campbell. ( By title. ) 



' The Discovery of a Dextrose Factor in Satu- 

 rated Cane Sugar Solutions ' : L. W. Wilkinson. 

 (By title.) 



' The Composition of Myrtle Wax ' : W. R. 

 Smith and F. B. Wade. 



Pittsburgh being at the center of the 

 region of greatest iron and steel produc- 

 tion of the United States, opportunities 

 were offered the members to inspect many 

 of the great metallurgical establishments. 

 Visits were made also to the works of the 

 H. J. Heinz Company, manufacturers of 

 food products, to the oil works of the At- 

 lantic Refining Company, to the oil wells 

 of the Forest Oil Company, and to the 

 Demmler works of the American Tin Plate 

 Company. The many courtesies sho\vn by 

 the officers of these works added much 

 to the pleasure and interest of the Pitts- 

 burgh meeting. 



