THE MODEL ROOMS. 
135 
THE MODEL LOOMS, 
The Model Rooms are situated at the northern or Piccadilly 
end of the building, and comprise an eastern and a western room 
on the Principal Floor, marked respectively A and B. The first 
room (A.), which opens directly on to the Principal Floor, contains 
a number of geological and mining models, principally illustra- 
ting metal mining ; whilst the second room (B.) is practically 
devoted to models and machinery, illustrating work in our 
coal mines. Considerable changes have recently been made in 
the arrangement of the objects in these rooms, and as other 
changes are still pending, it is needless to enter into any detailed 
description of this department of the Museum. 
Many of the mining models, formerly exhibited here, have' 
been transferred to the Southern Galleries of the South 
Kensington Museum. 
At the entrance to Room A. are suspended two majos of 
Scotland , one physical and the other geological ; whilst to the 
left of the visitor, on entering, is a Wall Case containing some 
fine examples of Veinstones and a series of diagrams illustrating 
the occurrence of ore -deposits. 
To the right of the visitor, as he enters the room, is a range' 
of Wall Cases containing a number of exceptionally large 
mineral specimens, occurring mostly as veinstones. Here, 
too, is placed temporarily a large map illustrating the Geology of 
the Thames Basin. This map, composed of several sheets of 
the one-inch Geological Survey Map, was prepared for and used 
by the Royal Commission on Metropolitan Water Supply, 1893. 
In the centre of the room stands a Case devoted to a large 
model of the workings at an Australian gold mine. It repre- 
sents the works of the Clunes and Port Philip Mining Companies, 
in Victoria, as they appeared about the year 1858, and shows 
picturesquely the various operations of raising and crushing the 
gold-quartz and extracting the metal. An adjacent Case contains 
a model of Holmbush Mine, near Callington in Cornwall, 
ingeniously constructed by the late Mr. T. B. Jordan, so as to 
show the directions of the copper and lead lodes, and the details 
of the underground workings. The lower part of the Australian 
Case is occupied by a huge crystal of Canadian Mica, and by 
some samples of auriferous gravels from Australia ; whilst in 
the lower part of the Holmbush case will be found a model of 
a Swiss Glacier by Professor Heim, of Zurich. 
Two models of salt mines in the Salzburg Alps are placed 
among the models in the central area of this Room. The method 
