Fossil Plants. 135 



D'Orbigny, and a supplementary series of the same number by OALLEET 

 ]leuss and Fritsch, which clearly illustrate the variety of form ^• 

 in the different members of the group ; and adjoining these is an J^ jaw"* 

 ideal model of a Nurnmulite, after Zittel, showing the structure case 16. 

 in a longitudinal and transverse section. On the rest of tliis 

 shelf are specimens of Nummulitic limestone from the Eocene 

 strata of Scinde and from the Bracklesham beds of Sussex ; also of 

 Orhitoides and Alveolinct limestones from Persia and India. 



In the middle shelf of the wall-case are Foraminifera, and 

 rocks containing them, from foreign localities. The formations 

 represented range from the Carboniferous Limestone to the 

 Miocene Tertiary. Attention may be called to the specimens of 

 NummuliUs from Egypt, Biarritz, and the large forms from 

 Kressenberg in Bavaria; to the Orhitoides from the Maestricht 

 Chalk, and the peculiar Calcarina associated with them. On the 

 lower shelf of the wall-case are other specimens of Nummulitic, 

 OrhitoideSj and Helerodegina limestones, and of Upper Oreen- 

 sand rock with Patellina. 



In Table-case 16 are the specimens of Foraminifera from 

 British strata, but on account of their small dimensions they can 

 hardly be distinguished without a lens. Large numbers have been 

 obtained by washing from the London Clay, and from the Coralline 

 Crag of Pliocene age from Suffolk. 



VEGETABILIA. 



Plantse. 

 PLANTS. 



The remains of fossil plants occupy the whole eastern side of GALLERY 

 Gallery X. The British specimens are arranged in the table-cases, 

 foreign specimens on the sloping shelf of the wall-cases, larger JJ^^^gl'"** 

 British and foreign plants on the horizontal shelves of the wall- j^i^ie! 

 cases. In the cases arranged down the middle of the gallery there cmm 

 are various examples of plants from British and foreign localities. 

 Beginning with the oldest known plants, there are a few specimens 

 in Table-case 32 and the Wall-case 18 illustrating our very 

 meagre knowledge of the flora of the Silueian epoch. A 

 number of alg£E-like impressions from the Wenlock Limestone of 



