VESTIGIAL LEAVES 



The projections here shown on one 

 of the older slabs are vestigial leaves. 

 An account of them, with reference to 

 their evolutionary meaning, is given in 

 this volume. They are all that remain 

 of the leaves that the cactus once bore; 

 and these reminiscent leaves drop off 

 very shortly after coming out, leaving 

 my new varieties as smooth as velvet. 



