20 



Conservation Department 



air temperatures indicated. This relation (air 80, water 68-71) 

 while commonly found in brown trout streams of lower altitudes 

 and others which do not contain trout has not often been observed 

 by the writer in brook trout streams. 



There is a possible explanation for the occurrence of brook trout 

 in these two creeks, namely, that the maximum air temperatures 

 in the Fish creek region do not run nearly so high as those in the 

 lower altitudes. This is shown by the following temperature 

 records furnished by the United States Weather Bureau Office at 

 Ithaca, N. Y., for Turin and Constableville, two towns situated 3 

 to 4 miles east of the region in question, in comparison with those 

 taken during the same years at Ithaca. With no recent records 

 available from the upper region we must compare those taken from 

 1890 to 1895 (Table 3). 



Table 3. — Temperature Data for Turin, Constableville and Ithaca 



YEAR 



Summer 

 maxima 



Number of days maximum 



88 OR ABOVE 



Place 



June 



July 



Aug. 



1890 



91 



87 



85.9 

 89 

 89 



87 





3 

 ' 1 



1 

 2 



Turin 



1891 



Elevation - 1264 



1892. . 



Av. max. 6 yrs.= 88.1 



1893 



1894 



1895 





1890 



1891 



88 

 89 

 85.5 



88 



1 



1 

 No data 



1 



1 

 1 



2 



Constableville 



1892 



1893 . 



Av. max. 4 yrs.= 87.6 







1890 



96 

 92 

 95 

 93 

 95 

 95 



2 

 5 

 3 

 4 

 2 

 6 



7 



3 

 10 



4 

 11 



4 



4 

 1 



4 

 4 

 3 

 2 





1891 



Elevation = 928. 5 



1892 



Av. max. 6 yrs.= 94.3 



1893 





1894 





1895 









While the altitudes of Turin and Constableville are 1,264 and 

 1,260 feet respectively, the elevation of upper Fish creek ranges 

 from 1,600 to 1,900 feet with consequently colder temperatures. 



A comparison of the summer maxima for the various years (Table 

 3, column 2) and the average summer maxima for the whole period 

 involved is significant. At Turin the absolute maximum for the 

 six years was 91, while the average for the summer maxima was 

 only 88.1. In the case of Ithaca these two values were 96 and 94.3, 

 a difference of 5 and 6 degrees respectively. 



The possible cumulative effect of continued high air temp- 

 eratures upon water temperatures is probably not nearly so 

 large in the Fish creek region as at Ithaca. This is indicated by 

 the small number of days during which the maximum reaches 88 

 or above (columns 3, 4 and 5) in the case of Turin compared with 

 the large number for Ithaca indicating rather clearly that the 



