Editorial Comment. 51 
Frankfort on Main, and smelting works in Spain. The ores 
and methods employed at Olausthal and Freiberg, and espe- 
cially the latter, are conspicuous by their absence. 
Among the most notable objects exhibited by the German 
government are hand specimens of ores from the upper Harz 
veins, and of the lower Harz (Rammelsberg) deposits ; rea- 
gents, middle and end products of the lead works of the 
upper and lower Harz ; ore, middle and end products of the 
smelting works at Oker ; specimens from the royal 
Friederichs mine ; middle and finished products of the royal 
Friederichs smelting works; pyramid of gangue, iron ores 
and spiegel iron ; specimens of pig and Spiegel iron ; new ana- 
lytical method for the quicker separation of iron, manganese. 
cobalt, copper, aluminum, chromium, etc. 
Great Britain and her Colonies. 
Antimony ore from Dumfriesshire, Scotland; arsenical 
pyrites from New Cook's Kitchen and Levant mines, Corn- 
wall and Devon Great Consols mine; cobalt from Foel Herad- 
dug mine, North Wales; copper ore from Corriston, Lan- 
cashire; gold ore and auriferous quartz from the Morgan 
gold mine, North Wales; iron ore from Gillfoot Bark Mining- 
Co., Egremont, Midland Co."s mines at Frodingham, Lincoln- 
shire, Park iron ore mines, Hodbarrow Mining Co., Winford. 
Northamptonshire and Antrim Iron Ore Co. 
Lead ore from Snailbeach mine, Shropshire, Mawston mine, 
Derbyshire; Milnor, Holywell, Flintshire, South String, Lan- 
cashire, Rushen mine, Isle of Man, East Darran mine, Cardi- 
ganshire, Old gang, Swaledale, Ilalkyn, Meitz Wood, Corn- 
wall, Great Laxey. Minera, Wrexam, Foxdale. Van mine. 
Llanidloes. 
Manganese ore from Benallt, Rhiw, Llyndywurchen, Har- 
lech (N. Wales), Merionethshire. Craig Uchaf, Llanbedr. 
Zinc ores from Mawston, Derbyshire, T.ruastell Conway; 
Milwr Lid, Flintshire. Old Milwr shaft, Ilalkyn mines, 
Wrexam and Talare mines, Holywell. Blende from Moelwyn, 
Mona and Parys, Anglesey, Greal Laxey, .Mining Co., Lid, 
Isle of Man, Minera mine Wrexam. and Van mine, Llanidloes. 
Johnson, Matthey & Co. make a unique exhibit of the pure 
rare metals; ingots of platinum, and iridium-platinum ; 
