April 3, 1896.] 



SCIENCE. 



507 



these discordances zero. The discordances 

 in position angle have been turned into arc 

 of a great circle by multiplying them by the 

 sine of the distance. For this reason the 

 sum of the position angle discordances will 

 differ slightly from zero, as the constant was 

 applied before turning them into arc of a 

 great circle. It should perhaps be remarked 

 that the comparisons were made with the 

 old Eutherfurd measures as printed in my 

 paper on the Pleiades, alreadjj^ referred to, 



without the application of any corrections 

 whatever. In conclusion, I wish to express 

 my thanks to Euthebfubd Stuyvesant, 

 Esq., who had placed at the disposal of 

 Prof. J. K. Eees, Director of the Columbia 

 College Observatory, funds for the reduction 

 of the RuTHEEFUED platcs. This has en- 

 abled the Observatory to secure the services 

 of Mes. Heeman S. Davis, who has relieved 

 me of the very arduous labor of computation 

 involved in the reduction of these measures. 



Table of Discordances, 

 Eutherfurd Measures minus New Measures. 



Columbia College Observatory, Maroh 10, 1896. 



Haeold Jacoby. 



ANNUAL RECEPTION AND EXHIBITION OF 

 THE NEW YORK ACADEMY OF SCIENCES. 

 The New York Academy of Sciences 

 held its third annual reception on the even- 

 ing of March 16th, at the American Mu- 

 seum of N"atural History. The reception 

 included an exhibition of apparatus and 

 specimens illustrating the progress of sci- 

 ence during the year, and more particularly 

 the work done by scientific men in and 

 about New York. The exhibition in the 

 afternoon was thrown open to students in 



the various educational institutions of the 

 city, teachers and other persons interested 

 in science, while the reception in the even- 

 ing was attended by the members of the 

 Academy and a number of guests. Both 

 occasions were remarkably successful, the 

 exhibits being of the same high character 

 as have been shown at the previous recep- 

 tions. The exhibition took place on the 

 second floor of the Museum, which was 

 kindly placed at the disposal of the Acad- 

 emy and was under the direction of Prof. 



