Show at ALMOST MOST AS MUCH AS GOLD photography has ha twice doubled the tha price of platinum tho the idea that the spread of 0 photography could do severe injury to tho the trade in commercial fertilizers and especially ally to the conversion ot of raw ph phosphate into plant food seems at first sight eight absurd yet so it Is and in this way phosphates and bones to be made available as soil improvers Im must betread be treated with sulphuric acid now sulphuric acid will dissolve most metals as easily as water does sugar platinum Is al the only metal upon which it has no effect so in spite ot of their great cost manufacturers have generally employed retorts made ot of a platinum alloy for the concentration of sulp sulphuric hurle acid these retorts used to be made in paris and cost to apiece today to day such a thing as a platinum retort would cost literally a fortu fortune ne I 1 lor for platinum owing to the introduction ot of the process in photography to has gona up from about 5 R an n ounce to the present price ot of 20 an cunce aunce it is indeed nearly as cost ly as gold stray stories a |