115 



In case 128 will be found a block of granKe trr.versed by 

 veing of tinstone and other most instructive specimens from the 

 Saxon tin lodes, from Zwitterstock, Altenberg. 



Stannite, tin-pyrites, from Cornwall and Tasmania, will be 

 found at the end of the case. 



IRON. Case 86. 



Massive ores from Canada, Russia, Scandinavia, Saxony, Elba, Magnetite. 

 India, and the United States. 



3599, Kittelas County, "Washington ; a specially valuable iron 

 ore ; it contains no refractory elements, and a considerable 

 quantity of fuel and fluxing material. 



588, 6040, Erench Creek Mine, Pennsylvania ; crystallised 

 with pyrite. 



586, Hull, Canada, and 9288, Essex County, Is"ew York State ; 

 octaliedral crystals, showing faces of the rhomhic dodecaJiedron. 



8774, Chillagoe, JSTorth Queensland; a large twinned rliomhio 

 dodecaliedral crystal of magnetite, with edges about 1-|- in. long. 



8773, Chillagoe, in case 126 ; a cluster of rJiomhic dodecaliedral 

 crystals. 



581, Digby, Canada. Martite. 



8524, Thomas Mountain, Utah ; large octaliedral crystals. 



3333, Michigan ; a good specimen of the variety of hematite Hematite 

 known as Tcidney ore^ from its appearance. 



Ores from Canada and various localities in the United States. 



The collection of ores from the Lake Superior mines is very 

 complete, representing the deposits and classes of ore Avorked. 

 The deposits are of enormous size, and the ore is of prime 

 quality. The cost of mining is very small, steam-shovels being 

 used, as the ore is generally soft. The cost of freight to the 

 iron-works is, however, considerable, the distance traversed being 

 about eight hundred miles, and necessitating several transfers of 



