LKCT. XI.J CAUL1NAR AND FOLIAR APPENDAGES. 681 



with a reticulated epidermis only, which is studded 

 with long hairs all pointing downwards, and co- 

 vers a number of glands, the excretory pores of 

 which open upon its surface. The ventricose part of 

 the funnel is smooth, shining, and lined with a 

 cutis closely resembling that of the outside of the 

 leaf; this terminates, however, by a well-defined 

 line a little below the lip ; and at the faux, if it can 

 be so termed/ of the funnel, we again find a band 

 of the same reticulated, glandular epidermis as at 

 its bottom, except that it is devoid of hairs, and 

 exudes a sweet, viscid secretion. The whole of the 

 interior surface of the dilated lip or hood, is co- 

 vered with short stiff hairs, all pointing down- 

 wards. The pitchers of Sarracenia vary consi- 

 derably in size; some, particularly those of S. 

 flava, being often more than three feet in height. 

 All of them contain some fluid. The intimate 

 structure of the whole is the same as that of the 

 leaf. 



If the use of the pitchers in Cephalotus and 

 Nepenthes be problematical, there is sufficient evi- 

 dence for asserting, that those of Sarracenia are 

 chiefly intended for fly-traps; and it is very pro- 

 bable that the gases, and the other results of the 

 putrefactive process, produced by the bodies of 

 the insects which enter them and die there, may 

 be essential to the healthy economy of the plant. 



According to some observations on the power 



of Sarracenia to entrap insects, made by Dr. J 



* 



