-156 Prof. Hooker on Trichomanes elegans. 



scale of animals than is generally supposed. Dr. Grant il- 

 lustrated his observations by numerous specimens of the male 

 and female, showing the viscera in their natural as well as in- 

 jected state. 



Dr. G. has also made some interesting observations on the 

 nature of the glandular vermiform appendix opening into the 

 stomach of several gasteropodous mollusca, as the Aplijsia, 

 the Doris, &c. From the relations of this small glandular 

 caecum to the biliary system and alimentary canal of these 

 animals, and from its particular structure, Dr. Grant con- 

 siders it as quite analogous to the small pyloric caeca, or pro- 

 per pancreas, of osseous fishes, though representing that organ 

 under a much simpler foi'm. Several specimens of the Doris 

 Argo were lately exhibited to the Wernerian Society, showing 

 the connexions of this pancreatic appendix with the stomach 

 and liver. — Edi?i. Phil. Joxirn. 



PROFESSOR HOOKER ON MR. RUDGE's FIGURE OF TRICHOMANES 



ELEGANS. 



We copy from the Edinburgh Journal of Science the fol- 

 lowing statement occasioned by Mr. Salisbury's reference to 

 Professor Hooker's plate of Trichomanes elegans mentioned in 

 our report of the proceedings of the Linnaean Society, March 

 15, and April 5. Vol. Ixv. p. 295. 



" We find by an article in Taylor's Philosophical Maga- 

 zine, that M. Bory de St. Vincent has declared the figure 

 published by Mr. Rudge, in his Icones et Descriptioncs Plan- 

 tarum Rariorum Gtiiance, of the Trichomanes elegans to be 

 incorrect, and composed of two different species ; or, according 

 to M. Bory's ideas, of two distinct genera. This has given 

 rise to considerable discussion among the botanists in London ; 

 and, in justification of the fidelity of the figure, our testimony 

 is brought forward ; we having given, in the fifty-second plate 

 of Exotic Flora, a figure of the Trichomanes elegatis, and 

 having spoken of the figure of Mr. Rudge as excellent. This 

 term of approbation, however, was only meant to apply to such 

 [part] of the figure as represented that state of the plant which 

 we had ourselves represented; that is, the barren fronds and 

 those fertile spikes which have separated involucres. The other 

 spikes with united involucres we had never seen ; but having 

 thcfi* only a single specimen to examine, we did suppose that 



* " We say then, because we have since had the opportunity, through the 

 liberality of the same gentleman as "sent us the first indiviclual (the Rev. 

 Lansdown Guilding), of examining very many other specimens. All have 

 the involucres sejmrated, as represented in our plate, and as represented in 

 the left hand spike of the entire plant in Mr. Hudgc's representation, and 

 at fig, 2. of the magnified portion." 



those 



