34 LESSONS IN AGRICULTURE 



should be removed at least once a week. The cans 

 should have covers. 



5. Kitchen waste intended as food for hogs should 

 be removed and used daily. 



6. Haul out the manure and spread it on the soil 

 every day, or put it in a screened box to be emptied 

 over the fields or gardens at least once a week. 



7. If inconvenient to haul the manure at short inter- 

 vals, treat it with kerosene or gypsum. 



8. Keep up the work of destroying adult flies by 

 the usual methods, and judiciously screen against them. 

 Flies breed in filth; they are among the worst agencies 

 in the spread of typhoid fever, and every means pos- 

 sible should be used to banish them from our homes. 



LESSON VIII 



4. THE BUQ 



If it is possible to catch a two-year cicada, some- 

 times called "dog-day harvest fly," or improperly, the 

 locust, this will make the best specimen for the study 

 of the true bug. If none of these can be got, a squash 

 bug will illustrate the characteristics of all bugs. 



1. Draw the view of the whole body. 



2. How many wings are there? Note in the squash 

 bug that the front half of the wing is horny and that 

 the back half is membranous. 



3. Note the triangular prominence of the thorax on 

 the back. 



