194 NATURE-STUDY LESSONS. 



1 6. A weight of lOO lbs. placed 2 feet from the fulcrum 

 is balanced by a weight of 25 lbs. How far is the latter 

 from the fulcrum? 



17. ObsexFe ordinary machines and appliances to dis- 

 cover in them as manypiactical applications of the lever 

 as possible. 



Other ordinary examples are : — scissors, knife blades, 

 pump-handles, wheel-barrows. 



