316 VEGETABLE ORGANOGRAPHY. 



less when one is absent or united to the neighbouring 

 one, or more when one is composed of several verticils or 

 similar rows (Book iii. Ch. 2). 



08th. The almost universal disposition of the pieces 

 of each verticil or row, is that of being alternate with 

 those of the preceding verticil or row (Book iii. Ch. 2). 



39th. The number of pieces of each floral verticil is 

 generally three in Monocotyledons, and five in Dico- 

 tyledons (Book iii. Ch. 2). 



40th. All the caulinary, and especially the appendi- 

 cular parts of plants, are capable of being united 

 together, especially during their infancy ; the union is a 

 distinct phenomenon from the graft ; it is the more easy 

 in proportion as the nature of the organs is more 

 analogous; it takes the name of Cohesion when it 

 comes between similar organs, and Adhesion when 

 they are different. The different degrees of adhesion of 

 similar organs, or of the parts of the same organ, 

 determine either its integrity, or the divisions or in- 

 dentations of most organs. 



41st. All the caulinary or appendicular parts are 

 capable, when they are filiform, of expanding into 

 limbs ; and when naturally in the form of a limb, of 

 presenting a cylindrical appearance. They may also 

 put on, within certain limits, forms, sizes, texture, 

 colours, and even functions and positions, varying in 

 different points of the same individual or analogous ones ; 

 this constitutes the Degenerations or metamorphoses 

 of organs. 



42d. All the appendicular organs, verticillate or spiral, 

 are capable of presenting multiplications of number, 

 both in the increase in the number of the verticils or 

 spires, or in the increase in that number of the pieces in 

 each of the systems. 



43d. All the organs of plants are susceptible of being 



