APRIL. 



107 



known except from books, proves to have the peculiar structure of 

 indusium found in our common Pteris aquilina, and it remains to be 

 decided whether Pteris should absorb Pcesia, or whether the structure 

 necessitates a separation, in which case the separated genus under the 

 name of Pcesia would come near the Lindsoeece, probably as a distinct 

 section. 



The Peranemece afford some variety in the character of their indusia ; 

 indeed, the most fa- b a c 



miliar genus, Woodsia, 

 shows three modifica- 

 tions of the cup form, 

 one almost entire and 

 nearly closed at the 

 mouth, another split 

 into a few broad divi- 

 sions, and a third re- 

 duced to a small scale 

 fringed with long in- 

 curved hair-like seg- 

 ments. They comprise 

 five genera : — Pera- 

 nema, Diaealpe, Arach- 

 niodes (a doubtful genus 

 probably belonging to 

 the Akophilece) , and 

 Woodsia, all with free 

 veins, the first having stalked sori ; and Hypoderris, with the veins 

 reticulated. 



The subdivision of the remaining tribes must be reserved for another 

 paper. 



Thomas Moore. 



Chelsea. 



§22. DicksomejE : (a), Dicksonia antarctica; (A), Cibotium 

 Barometz. 



RABY CASTLE, DURHAM. 



The seat of his Grace the Duke of Cleveland is situated about nine- 

 teen miles S. W. by S. from Durham, and is built upon the east side 

 of the park, which is very extensive and beautifully undulating. The 

 building is a noble Gothic pile, and the general effect, from its extent 

 and grandeur, is very imposing. The situation is also very fine, being 

 upon rising ground, and is enclosed with an embrasured wall and 

 parapet, which have seen good service during the border warfare ; but 

 for this we must refer our readers to history, as it is to the gardens we 

 are bound, and these we found situated upon the north side of the 

 Castle, but quite detached therefrom, the entrance being about 100 

 yards distant from the entrance gates to the castle. The gardens are 

 well situated upon a gentle rise, facing the south. Having heard, 

 especially of late, so much of Raby, we were certainly somewhat taken 

 aback at not finding more extensive garden grounds here ; pleasure 

 grounds there are none ; we should say seven acres include all the 



