EFFECTS OF COLD UPON INSECTS. 99 



migratory birds seem to have been aware of this abun- 

 dance ot" insects by their ap|)cariii<r cailier tlian usual. 

 We saw a pair of nij^htingales at Gieenliithe on the 

 21st of JNIarch, and a number of swallows the same 

 Aveek at Lee, — which is two or three weeks before 

 their average time.* 



* J. R. 



