PLATE XI. 



FOLIATION. 



FIG. 



1 Convolute (p. 150) 



2 Involute (p. 150) 

 S Revolute (p. 150) 



4 Conduplicate (p. 151) 



5 Equitant(p. 151) 



6 Imbricate (p. 151) 



7 Obvolute (p. 150) 



8 Plicate (p. 151) 



9 Convolute* (p. 150) 



10 Involute opposite "1 



5 (p. 150 involute) 

 _ 



12 Revolute opposite (p. lot)) 



13 Equitant ancipit f "1 



5 (p. 151 equitant.) 

 m 



* More than one leaf convolute. Fig. 1. is a single Convolution, 

 f Equitant with two prominent angles. See the difference in Fig. 5 



which has not those angles. 

 | Equitant three ways, so as to form a triangle. 



Z 



