60 PROCEEDINGS OF THE 



The records from points within a ten miles radius of Philadel- 

 phia have been combined into five sections as described on i^age 

 35 of Cassinia for 1902, the groups being as follows: 

 I. Moorestown, Rancocas and Beverly. 

 II. Haddonfield and Audubon. 



III. Swarthmore, Lansdowne and Media. 



IV. W. Fairmount Park, Ardmore, Haverford, Bryn Mawr. 

 V. Germantown, Wissahickon, Chestnut Hill, Frankford. 



Comparing the arrival of twenty-four species recorded from 

 all five sections we have the following results : 



Moorestown. Swarthmore. Germantown. Ardmore. Haddonfield. 



First . . 10 8 7 5 5 



Second .66522 



Third . . 3 5 6 8 7 



Fourth .21463 



Fifth . . 3 4 3 3 7 



Or in other words, the Moorestown section was the first to 

 report ten species, second to report six, third in three instances, 

 etc. By giving a rank of 24 to the section which might have 

 been first to report all the species, we find that these five sec- 

 tions would rank relatively as follows: Moorestown 54, Swarth- 

 more 59, Germantown 63, Ardmore 72, Haddonfield 77. 



The Haddonfield records are so admittedly incomplete that 

 they should not be seriously considered in such a comparison. 

 The other figures, however, indicate that the average time of 

 arrivals at all points along the river, i. e., Moorestown and 

 Swarthmore sections, are nearly the same, and that farther back 

 in the higher ground they average a little later, which corrobor- 

 ates the deductions of last year. 



Careful study of this year's records also seems to indicate that 

 the first arrivals of a species in the Philadelphia district may 

 consist of individuals at several widely scattered stations, while 

 it may be some days before the next influx of that species, 

 which will be indicated by first records at a number or all of 

 the other stations. 



An interesting record for 1903 is that kept by Mr. Otto Behr, 

 at Lopez, Sullivan county, on top of the main Alleghanies, and 



