other side of the same pond, may not produce a 

 single individual ; and as they fly by night, a 

 pond which one day will be alive with them, 

 will, perhaps, the next be quite deserted. Ponds 

 on commons with gravelly bottoms, seem to 

 produce the greatest number and variety of 

 water insects. 



From the time that the thistles begin to 

 bloom, they should be constantly examined, 

 for diflFerent species of humble bees (Bombi) 

 will be found on them, in company with many 

 other insects. , 



In August and September, the grasshoppers 

 (GyrillidcE, 8^c.) will be found abundant in mea- 

 dows and marshes, and should not be neglect- 

 ed on account of similarity of appearance. 

 About the same time the field bugs fCimices) 

 may be beat out of hedges, nettles, grass, &c. 



The Summer chrysalides may be dng for to- 

 ward- the latter end of June, and the beginning 

 of July 3 in the latter month the greatest num- 



