ITHE LAST WEEK [IN MARCH ee 37 
most insect life to sleep. Even some isolated 
Whirligig Beetles, not yet gathered together 
in their families (see Part I, p. 48) that had 
ventured out into deep water as the evening 
was so calm, had ceased their gambols for 
the day. They scurried to the bank as the 
advancing boat disturbed them, each leaving 
a little trail behind, but as we gained upon 
them they disappeared mysteriously by diving 
suddenly, and left us wondering what had 
become of them. Some swans were still 
busy with their evening meal, cropping short 
grass from the shore as they paddled leisurely 
by. A hungry bat which had, perhaps, just 
left his winter quarters this fine evening for 
the first time this season, was very busy, 
and seemingly in a great hurry, catching 
insects all the time. Bats feed by night, but 
this one was already on the wing, though 
the sun had not yet set ; his long fast had 
doubtless made him very eager for his food. 
And these sights served to whet our appetites, 
too, as we left the spot, 
