202 LETTER XLVI. 



any where except in the woody parts ; Nepenthes 

 produces them not only in the pith and the bark, but 

 actually possesses a peculiar organ, as it would seem, 

 expressly formed for their more abundant develope- 

 ment ; namely, the cellular stratum between the wood 

 and bark. My object, therefore, in bringing these 

 points to your notice, is not so much to illustrate 

 general structure, as to acquaint you with a great 

 singularity of structure. 



If you now proceed to examine the cuticle, you will 

 find even there a circumstance which is very unusual. 

 The stomates on the outside the pitchers, and on the 

 upper side of the leaf, are quite different. The cuticle 

 of the upper side of the leaf (Plate XLVIII. D.), 

 consists of lengthened meshes formed by the union of 

 long cells ; and among them are placed colourless, 

 oval stomates (D. a. and B. a.), formed of a pair of 

 parallel cells, and containing a good many particles 

 of semi-opaque matter. But on the outside of the 

 pitchers, the stomates are different in form and colour ; 

 the cuticle of this part has rounded meshes {Plate 

 XLVIII. C), among which lie roundish reddish sto- 

 mates (C. b. and A. «.), not appearing to contain 

 glandular matter, and consisting of four cells, of which 

 the two central ones are much deeper coloured than 

 the others. Moreover, below each of these stomates, 

 in the inside of the leaf, are arranged six or seven an- 

 gular, deep-red cells, which form a sort of internal 

 gland, resting upon the stomate (C. b.). This cir- 

 cumstance seems connected with the glandular struc- 

 ture of the inside of the pitcher, and possibly will be 



