£2 THE OBJECT OF THIS WORK. 



will involve the consideration of the life, growth, tex- 

 ture and secretions of plants. It will invoke an account 

 of the different organs whose presence is required in 

 the constitution of an individual plant. It will involve 

 a particular examination of those organs which are ne- 

 cessary for the perpetuity of the race : and lastly, it 

 will present an explanation of those systems, which are 

 to be our guide in studying the plants which meet our 

 view, and in the investigation of their natural affinities. 



