280 NATURAL HISTORY OF THE FARM 



life history of mosquitos may be demonstrated by leaving a 

 vessel of rain-water exposed on a shaded window-sill, outside, 

 where the adult mosquitos may fly to it, for a fortnight 

 before it is needed. Eggs will be laid on the surface and all- 

 stages of development will quickly follow. Living larvae of 

 black-flies ("turkey-gnats," "sand-flies," etc.), horse-flies and 

 punkies and alcoholic specimens of bot-fly and horn-fly larvae 

 may be shown in demonstration. 



The record of this study may consist of a fully annotated 

 list of the pestiferous insects observed. The notes should 

 cover such points as the following: 



Time and place of observation and relevant .weather 

 conditions. 



Kind of animal molested, and sort of molestation (buzz- 

 ing, tickling, biting, egg-laying, etc.). 



Means employed by the animals for evading or in combat- 

 ing the pests (standing in water, in wind, in brush, switch- 

 ing or biting them, coating their hair with mud, etc.). 



Breeding, places of pests. 



