388 Minerals 



SERIES B. ROCKS. 



The Collection of Rocks is arranged in three main 

 Divisions : 



Div. I. The Introductory Series, exhibited in six window- 

 cases (V X) of the Gallery. The specimens have 

 been selected, arranged and labelled, to serve as 

 an Introduction to the Study of Rocks. 



Div. II. The Systematic Collection, exhibited in twelve window- 

 cases (XI-XXII) of the Gallery. The specimens 

 have been selected, arranged and labelled, to serve 

 as examples of the kinds and varieties of Rocks. 



Div. III. The Topographical Collection, preserved in drawers. 

 The specimens are arranged according to localities. 



Those specimens which are too large to be placed in the posi- 

 tions proper to them as members of the series, for instance, basaltic 

 columns, are mounted on separate pedestals or are placed in two 

 wall-cases (F, G) of the Gallery. 



Further, an auxiliary collection of polished slabs of marbles 

 and other ornamental rocks is exhibited in a wall-case (A) of 

 the corridor. 



CHRONOLOGICAL LIST (1753-1903) REFERRING TO 

 SERIES B. ROCKS. 



1764. 



A table-top inlaid with Vesuvian products : presented by the 

 Earl of Exeter. 



1768, 1769, 1772 and 1779. 



Specimens of lavas, and a series of large polished sections of 

 volcanic bombs from the dolomitic breccias of Monte Somma, 

 Vesuvius : collected and presented by Sir William Hamilton, F.R.S. 



