74 



OBJECT LESSONS IN BOTANY. 



riding horseback). Each leaf, first on this corner, then on 

 that, infolds or overlays all that is within it. 



138. Ohvolute vernation appears in the leaf-bud of Sage 

 (Fig. 228), where each leaf infolds onl}^ half of the blade of 

 its opposite leaf. 



234 



Vernation.— i^/^. 280. Cherry leaf-bnd,— convolute. Fig. 231. Lilac,— imbricate. 

 Fig. 232. Birch leaf,— plicate. Fig. 233. Dock,— revolute. Fig. 234. Balm-of-Gil- 

 ead, — involute. 



139. In the bnd of Dock (Fig. 233) we find the yonng 

 leaves revolute^ or rolled backwards from both edges ; but in 

 the bud of Balm-of-Gilead (Fig. 234) they are involute^ or 

 rolled inwards from both edges. This is best seen under a 

 microscope of one lens, i. ^., a single microscope. 



140. In the bud of Tulip-tree (Fig. 225) each leaf is recli- 

 nate^ being bent over forward and infolding all within it; 

 and in the Fern (Fig. 226) it is ch^cinate, or coiled from the 

 top downwards, like a watch-spring. 



138. Tlieobvohite? 



139. What tlie vernation of Dock ? of Balm-of-Gilead ? 



140. Please describe the reclinate ; the clrcinate. 



