154 EFFECTS OF HEAT. 



A. Because when magpies fly abroad 



singly, the weather is cold and stormy ', 



but when both birds fly out together, the 



weather is warm and mild, which is 



favourable for fishing. 



Q. Why do SEA GULLS fly about the SEA in 

 FINE weather P 



A. Because they live upon fish, which 

 are found near the surface of the sea in 

 fine weather. 



Q. Why may we expect STORMY RAINS, when 

 SEA GULLS assemble on the land ? 



A. Because the fish (on which they 

 live) leave the surface of the sea in stormy 

 weather, and go down too deep for the 

 gults to get at them; they are obliged, 

 therefore, to feed on the worms and larva 

 which are driven out of the ground at 

 such times. 



Q. Why does the PETREL always fly to the 

 SEA during a storm ? 



A. Because the petrel lives upon sea 

 insects, which are always to be found in 

 abundance about the spray of swelling 

 waves. 



(The Petrel is a bird of the duck-kind, which lives in the 



