320 hepatic.*:. 



<). Very young Pistillum, the outer one of the Bame group. 



10. Another Pistillum of the same, on which the male influ- 

 ence appears to have been exerted. 



All under \ Achromatic and measured. 



In the distinctly fecundated pistillum, the ovary is much 

 enlarged, greenish from minute globules, and opaque enough 

 not to be seen through, but appears to contain a central 

 moveable body. The style is distinctly twisted. Apex irregu- 

 lar, as if crowned with uninform brown glue, style canal dis- 

 tinctly browned nearly to the base, as usual, irregular flakes 

 of light glue-like substance, visible about apex of the style. 

 The other pistella are either virgin : or have the same change 

 in the style-apex, but none in the ovary, which remains as 

 in fig. 6. 



The Pistillum now contains a body : attached by its upper 

 end, or that next the style, consisting of cellular tissue. Cells 

 large, situated next the apex, but one per paria binat. seriat. 

 The cells are turgid and swollen out, nevertheless the terminal 

 cell is still visible. See 7* 7a. 8. 



From some appearances presented by a virgin young pis- 

 tillum and a fecundated one of the same set, the central cavity 

 of the ovary would appear to be occupied by a pendulous 

 simple cell, this accords with theory, and the structure of the 

 seta. See 9, 101. Fig. I. 



It is also very evident from the examination of other speci- 

 mens, that the style apex, in some presents a dilated lacerated 

 appearance : in others there is an appearance of some liquid 

 or air rendering the whole of the canal opaque, and filling up 

 the greater part of the cavity of the ovary. See 11, Fig. I, in 

 which the cellular structure of the dilated apex is scarcely if 

 at all discernible. 



The lacerated dilated apex has been only observable in 

 abortive cases, in one of which the style was very spiral as 

 if imitating the elaters. 



In this genus I have confined the illustrations to the deve- 

 lopementof the seta. The apex of this (see Fig. II. 4) a time 



