46 The Wilson Bulletin. 



1901,42. And for the first fifteen days of 1902, 35. The 

 number of trips taken during these years is as follows: 

 1896, 9; 1897, n; 1898, 12; 1899, 10; 1900, 5; 1901, 14, 

 1902, 5. The number of species seen during this time 

 reaches the rather startling number 65. That is fully one 

 third as many as have ever been recorded during any entire 

 year and is nearly two-fifths of all the species recorded for 

 the county. 



A more accurate record would include a single winter 

 during which the conditions of temperature and weather and 

 the food supply, would be far less variable than during parts 

 of two winters. The records follow: 1896, 19; 1896-7, 37; 

 1897-8, 35; 1898-9,41; 1899-00,32; 1900-1,34; 1901-2, 

 42. The trips for the corresponding times were: 1896, 7; 

 1896-7, 7; 1897-8, 13; 1898-9, 12; 1899-00,8; 1900-1, 9; 

 1901-2, 10. Of course there were some records made with- 

 out any definite effort to get away from the village. 



Comparing the five routes to determine which is richest 

 in species, we find that during the time covered by the 

 study there have been seen at Chance Creek, 39 species; 

 Beaver Creek, 35; north overland, 22; south-east, 30; 

 north-east, 32; while 12 have been recorded on the lake 

 and 11 within the limits of Oberlin. The average number 

 of species recorded for each of these five routes gives a slight 

 advantage to Beaver Creek over Chance Creek, and a decid- 

 ed advantage to the stream gorges. Chance Creek, 20; Bea- 

 ver Creek, 21; north overland, 17; south-east, 15; north- 

 east, 14. One might expect the south-east and north- 

 east routes, to be richer than the north overland route; 

 since they touch the Black River gorge, but the old lake 

 beaches more than compensate for any advantage that the 

 shallow gorge might offer. The route is a longer one, also. 



This comparison clearly proves the greater richness of the 

 steep sided and deep stream gorges in species which reg- 

 ularly live there during the cold weather. The records for 

 a series of years also prove that more species not regularly 

 found in the county in winter resort to the stream gorges 



