471 
MUSEUM OF Q@CONOMIC GEOLOGY. 
The collections of this establishment, attached to the office of 
the Board of Woods and Forests in Craig’s Court, Charing Cross, 
have very materially increased during the past year ; and it is un- - 
derstood that arrangements are making for the purpose of opening 
them gratuitously to public inspection on stated days in every week. 
The well-known Secretary of the Polytechnic Society of Cornwall, 
Mr. Jordan, has been appointed the keeper of the Mining Records, 
which are to be preserved in this Museum, and are already freely 
communicated. 
Here will be also large collections of Models, illustrative of ma- 
chinery used in mines, as well Foreign as British; so that not only 
will the British miner be enabled to compare the machinery em- 
ployed in different parts of his own country, but he will also find 
that adopted in foreign countries. It is understood that any one 
desirous of making drawings of these models for the purpose of 
erecting machinery from them, will be permitted to do so under 
proper regulations. 
In addition to this collection of Models of Mining Machinery, 
there will be other Models, illustrating the mode of working mines 
in different localities. A very beautiful model of the celebrated 
Doleoath Mine in Cornwall is now in the collection; and we 
understand that Mr. Sopwith is preparing for this Museum models 
_ of the coal fields of the Forest of Dean, and of Northumberland 
and Durham*. Models illustrating the mode of working coal, and 
of ventilating the collieries in the North of England, are also in 
preparation. From all these the public may receive valuable, con- 
densed, and gratuitous information as to the mode of occurrence of 
minerals within the earth, the various methods of working mines, 
aud the machinery by which coal and metallic ores are brought to 
the surface and fitted for the market. There will be also models 
illustrating the Metallurgic processes, and samples of the various 
stages of these processes, and their final results. 
The agriculturists are availing themselves of the facilities afforded 
by the laboratory, and analyses of soils have become numerous. It is 
in Contemplation also to have lectures on various branches of (E¢o- 
nomic Geology, including Building Materials, Agricultural Che- 
mistry, Geology, Mineral Analysis and Metallurgy. 
The official director of this rising establishment is our indefati- 
gable colleague and Foreign Secretary, Mr. De la Becher. 
ORDNANCE MAP. 
The Members of this Society will rejoice to hear, that in con- 
sequence of representations from the British Association for the 
Advancement of Science, and from other scientific and commercial 
* These models will be upon a scale of true proportions ; that is, the 
scale of height and of horizontal distance being the same. 
+ For further account of this establishment, see my Address to the Geo- 
logical Society, 21st February 1840. 
ZR2Z 
