226 PRINCIPLE OF THE LEVER. 



Some swift as meteors, o'er the shining stream 

 Quiver their netted wings, whereon the light 

 Refracted shows unnumbered varied dyes ; 

 Some clinging to the nectarous clover rest 

 Their silken wings blue as the Southern day, 

 And varied underneath with tracery 

 Of imbricated scales and softest down 

 In starry spots, like amethysts, inwrought, 

 So delicate, the kisses of the wind 

 " Might visit them too rudely ; " others marked 

 On their strong plumes with irridescent eyes, 

 Such as were given to Juno's sacred bird 

 What time Arestorides sunk in sleep 

 Lulled by Cyllenian music, gently fan 

 Their elegant pinions or with eager flight 

 Spring through the fragrant air : O ! beautiful 

 Though evanescent in their loveliness 

 Do they not, in their little day of life 

 Extract fine pleasure's essence, wandering 

 In love and sunshine through a laud of flowers. 



FRANZ. 



ON THE PRINCIPLE OF THE LEVER. 



WE are informed, in every treatise on mechanics, of 

 several orders of lever, referable to the principle that a 

 small weight may be made to balance a large one, by 

 placing both at such distances from the fulcrum, that 

 each weight, multiplied by its respective distance, 

 gives an equal product. 



The first order is rather the most simple, and may be 

 employed as the example : 



