MIXEEAL GALLERY. 
81 
passing down to the most ancient fossil- bearing strata. Along 
the top of the case is displayed a running section of all the 
sedimentary rocks of England in the order of their succession, 
each bed being distinctively coloured, and named to correspond 
with the actual specimens placed beneath. On the east side 
are exhibited additional specimens of marine reptiles from the 
Lias and a series of foot-prints of reptiles from the Trias of 
N". America and the New Eed Sandstone of England, &c. 
EiEST Floor. 
The gallery on this floor, entered from the south end of Gallery of 
the east corridor of the hall, contains the extensive Mineral Minerals. 
Collections, a fuller description of which will be found in the 
special guides.* 
Entering the gallery the visitor will find, in the first window- Introductory 
case on the left-hand side, a series of specimens selected and CoUections. 
labelled to serve as an introduction to the study of minerals. 
Beginning with a definition of what is meant by a mineral, it 
shows how essential characters were gradually recognised, and 
how minerals have been distributed into kinds and classified. 
In the next three window-cases specimens are arranged to 
illustrate the characters of minerals and the various terms 
used in their description. 
In the remaining six window-cases on the same side of the Rooks, 
gallery, a corresponding series of specimens illustrative of the 
characters of rocks is exhibited ; and the eleven window-cases 
on the opposite side contain a collection illustrating the various 
kinds of rocks, j 
In the table-cases of the gallery are exhibited specimens of General 
every mineral species and variety preserved in the Museum. JrineraiT °^ 
The cases containing this general collection are numbered from 
1 to -11, and the eight panes of each case are distinguished by 
* " Guide to tlie Mineral Gallery."' Price one penn}-. " Introduction to the 
Study of Minerals, with a Guide to the Mineral Gallery.'' Price sixpence, 
t *' Introduction to the Study of Rocks."' Price sixpence. 
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