DEDICATION. 
Your Royal Highnefs , at 
leaft at Your leifure hours ; 
but will rather add to the plea- 
fare, with which vegetable 
Nature in her prime verdure 
charms us : To fee the fteps 
ihe takes in her produdlions, 
and the wonderful power Ihe 
therein exerts : The admirable 
provifion Ihe has made for 
them, not only vigoroufly to 
draw to great heights plen- 
ty of nourifliment froni the 
earth ; but alfo more fublimed 
and exalted food from the air, 
that wonderful fluid, w hich is 
of fuch importance to the life 
of Vegetables and Animals : 
A 3 And 
