RECORDS 446 



Date. Time (Standard). Number of Leonids. 



1899. meteors. 



(At West Point.) 



Nov, 12. 13 h. 15 m. to 15 h. 30 m 5 i 



13. 13 h. 10 m. to 14 h. 30 m I o 



14 12 h. o m. to 17 h. o m o o 



15. II h. 40 m. to 15 h. 30 m 17 12 



16. 13 h. o m. to 14 h. 30 m 5 I 



(At New York City.) 



Nov. 15. 12 h. 55 m. to 18 h. om 68 68 



(by Misses Harpham, Proctor and Tarbox), 



Nov. 15. 14 h. 15 m. to 16 h. 45 m 36 



(by Mr. and Mrs. Woods). 

 (At Bayport). 

 Nov. 15. 13 h. 57 m. to 17 h. 35 m 39 



Professor Rees, observing casually while attending to the 

 photographic apparatus at Bayport, observed a first magnitude 

 Leonid at i 5 h. 29 m. on November i 5th, between the two lowest 

 stars in the handle of the dipper. At 15 h. 39 m. he observed 

 another first magnitude Leonid under Sirius. At 17 h. 15.5 m. 

 a fine Leonid trail lasting 3 seconds was seen over Procyon. 

 At 17 h. 30 m. a very bright Geminid was seen 20° south of 

 Regulus. 



Professor Rees stated in his second paper that observations 

 of latitude had. been made at the new site of Columbia Univer- 

 sity from April 24, 1893, to the present, and will be continued 

 until May i, 1900. The observers were Professors Rees and 

 Jacoby, and Dr. H. S. Davis. A zenith telescope made by 

 Waunscaff, of Berlin, was employed throughout. Its aperture 

 is 80 mm. and its focal length is i meter. Four groups of stars 

 were used having mean right ascensions of about 6 h., 14 h., 

 18 h., and 22 h. respectively. Each group contained 7 stars. 

 Up to the present time, 6516 pairs have been observed on 758 

 nights. From the observations, a curve was drawn showing 

 the latitude. This was compared with the curve required by 

 Dr. S. C. Chandler's formula (Ast. Jour., No. 446). From 1896 

 the observed epochs of maxima and minima seem to follow the 

 computed time. 



These observations give for the constant of aberration of light, 

 the value 



