74 



SCIENCE. 



[N. S. Vol. XXII. No. 551. 



THE THIRTY-SECOND GENERAL MEETING 

 OF THE AMERICAN CHEMICAL SO- 

 CIETY, HELD AT BUFFALO, 

 N. Y., JUNE 22-24. 



OPENING SESSION. 



An address of welcome was delivered by 

 President T. Guilford Smith, of the Buffalo 

 Society of Natural Sciences, and the re- 

 sponse by Francis P. Venable, president 

 of the Chemical Society. An address on 

 'The Classification of Carbon Compounds,' 

 by Professor Marston T. Bogert, and one 

 on ' Some Recent Advances in Physiological 

 Chemistry,' by Professor John H. Long, 

 followed. It is probable that both of these 

 addresses will be published later. The fol- 

 lowing papers were presented: 



Note on the Atomic Weight of Carhon: 



Charles L. Parsons. 



As the analyses made during the deter- 

 minations of the atomic weight of beryllium 

 were of two compounds containing exactly 

 the same elements, two simultaneous equa- 

 tions were obtained which would yield the 

 atomic weights both of beryllium and of 

 carbon, each entirely independent of the 

 other. The calculation gave the figure 

 12.007 for carbon and 9.112 for beryllium, 

 which is highly confirmatory of the cor- 

 rectness and accuracy of the work on beryl- 

 lium published in the Jour. Am. Chem. 

 Soc, 26, 721. 



Chemical Glassivare: Percy H, Walker. 



A series of tests for durability and solu- 

 bility of beakers and flasks, with analyses 

 and tests of a number of different glasses, 

 was reported upon. The zinc borosilicate 

 glasses are distinguished by permanent 

 trade marks, and are much more resistant 

 to changes of temperature, less soluble in 

 water and carbonated alkalis, but some- 

 what more soluble in caustic alkalis, than 

 the alkali-lime silicate glasses. The zinc 

 borosilicate glasses are generally of good 



quality, but much of the alkali-lime silicate 

 glass on the market is very poor. 



An Apparatus for Determining the Viscos- 

 ity of Liquids at Different Temperatures, 

 and An Apparatus for Determining the 

 Flash-point of Inflammahle Liquids: F. 



COURTOIS. 



These pieces of apparatus are described 

 and illustrated in the Scientific American, 

 May 20, 1905 (p. 408). One of the main 

 features of the flash-tester is the uniformity 

 of level insured by an overflow compart- 

 ment. 



meetings OF THE SECTIONS. 



During part of the time the society met 

 in the form of sections, before which most 

 of the papers were read. These were : 

 Section of General and Physical Chemistry, 

 Willis R. Whitney, chairman; Section of 

 Organic Chemistry, Marston T. Bogert, 

 chairman ; Section of Agricultural, Physio- 

 logical and Sanitary Chemistry, John H. 

 Long, chairman; Section of Inorganic 

 Chemistry, L. M. Dennis, chairman. The 

 papers read were: 



Vapor Pressure of Sulphur at 100° C: 



HiPPOLYTE GrUENER. 



Dry carbon dioxide, hydrogen and air 

 were passed over sulphur heated to 99°. 80 

 C, saturation of the gas being assured. 

 The sulphur volatilized was collected on 

 the walls of a detachable tube and thus 

 weighed. The results from these gases 

 agreed within 5 per cent., and the vapor 

 pressure calculated from the mean, for Sg, 

 is 0.00718 mm. For 70°, 80° and 90° the 

 vapor pressures are 0.00061 mm., 0.00156 

 mm. and 0.00287 mm., respectively. 



Confirmatory results were obtained by 

 boiling water with sulphur and weighing 

 the sulphur carried over by the escaping 

 steam. 

 On a Netv Dynamic Method of Measuring 



Vapor Tensions of Solutions: Louis 



Kahlenberg. 



