Miscellaneous Intelligence. 363 



Repetition of the experiment gave uniformly the same result. The 

 boiling point of liquid ozone at the atmospheric pressure may 

 therefore be taken as— 119°. The liquid oxygen required in 

 these experiments was obtained by the use of a Dewar apparatus 

 utilizing commercial compressed oxygen expanded after having 

 traversed a long serpentine tube cooled to —79°. In this way, 

 in less than hall an hour, a quarter of a liter of liquid oxygen can 

 be obtained in the laboratory or lecture room, without the use of 

 compression pumps or motive power. — G. H., cxxvi, 1751, June, 

 1898; Ghem. News, lxxviii, 29, July, 1898. G. f. b. 



II. Miscellaneous Scientific Intelligence. 



1. American Association for the Advancement of Science. — 

 The fiftieth anniversary meeting of the American Association 

 was held at Boston from the 20th to the 27th of August. The 

 President of the meeting was Prof. F. W. Putnam of Cambridge, 

 who has long been identified with the Association, having per- 

 formed the arduous duties of Permanent Secretary for some 

 twenty-five years. The retiring President, Dr. Wolcott Gibbs of 

 Newport, delivered an address upon the subject "On Some 

 Points in Theoretical Chemistry " ; this is printed in full in the 

 issue of Science for August 26. Addresses were also given by 

 the Vice-Presidents of the various Sections. 



The meeting was one of the largest in the history of the Asso- 

 ciation, the total registration being 903, a number surpassed only 

 three times, once at Boston and on two other occasions when the 

 meetings were held in conjunction with the British Association. 

 The list of papers given below shows also a large number of 

 entries. The place of meeting offered many attractions, both 

 scientific and social, and the members of the local Committee 

 did everything in their power to make the occasion successful. 

 The numerous excursions were largely attended and highly appre- 

 ciated. 



The place selected for the next meeting of the Association is 

 Columbus, Ohio, and Pres. Edward Orton, of the Ohio State Uni- 

 versity, has been elected President. The Vice-Presidents of the 

 several sections are as follows : Section A, Alexander MacFarlane; 

 Section B, Elihu Thomson; Section C, F. P. Venable; Section D, 

 Storm Bull; Section E, J. F. Whiteaves; Section F, Simon H. 

 Gage; Section G, Charles R. Barnes; Section H, Thomas Wil- 

 son; Section I, Marcus Benjamin. 



The following is a list of papers accepted for reading: 



Section A. Mathematics and Astronomy. 



Mary Proctor: Making Astronomy popular. 



Henry M. Parkhurst: Correction of local error in stellar photometry. 



H. S. Davis: The parallaxes of 61 1 and 61 2 Cygni from a reduction of the 

 Rutherfurd measures. 



Frank Schlesinger: The Praesepe Group: measurement and reduction of 

 the Rutherfurd photographs. 



J. R. Eastman : Discordances between the north polar distances of stars 

 derived from direct and reflected observations. The treatment of results from 

 reflection observations at the Greenwich Observatory. 



