102 



to have any further information regarding Cumberland and West- 

 morland Minerals that will help to make the list complete ; and 

 that the source of any information so received shall be acknow- 

 ledged in due course. 



The Classification adopted here is that employed in the arrange- 

 ment of the admirable collection in the British Museum ; as, all 

 things considered, this system is by far the best that has yet been 

 devised. 



According to this the minerals are primarily arranged in four 

 Divisions : — 



I. The Native Elements. 



II. The Compounds of the Metals with Elements of the 

 Arsenic Group, or of the Sulphur Group, or with 

 Elements belonging to both those groups. 



III. The Compounds of the Metals with the Chlorine Group. 



IV. The Compounds of the Elements with Oxygen. 



Each of these divisions is again divided into sections containing 

 minerals chemically related to one another ; and the sections are 

 further subdivided into groups arranged according to the crystallo- 

 graphic forms assumed by the several minerals composing it. 



The first Division, or that of the elements found native in an 

 uncombined state, generally embraces a very small number of 

 mineral species ; and in the district referred to in this list it may 

 well be doubted whether more than three or four species may be 

 safely included. 



The first of these is Gold. 



This metal is said to have been obtained in small quantities at 

 Goldscope and Brandley Mines, on the south-west side of Derwent- 

 water ; but whether part of the metal so obtained occurred in the 

 form of specks and isolated grains sparingly disseminated through 

 the vein stuff, or whether all of it occurred in intimate association 

 with the Chalcopyrites and Pyrites found in those mines, does not 

 seem to have been recorded. Traces of Gold may, it is said, 

 usually be detected in nearly every carefully-conducted analysis of 

 the two ores just mentioned ; but there seems to be some doubt 



