...I fellasleep on the steamer one day, and woke up in ten minutes to hearhim droning yet, "And the yield of platinum per ton was certifiedto be—" I forget how many pounds, or ounces, or pennyweights... 
Grant Allen 「An African Millionaire」
... This is more remarkably displayed in the iodideof platinum, which readily recieves a photogenic image by darkeningover the exposed surfaces, but speedily loses it by bleaching in thedark...
Henry H. Snelling 「The History and Practice of the Art of Photography」
...One or two other methods, on the other hand, require the use of the costly gold or platinum salts...
John A. Tennant 「Bromide Printing and Enlarging」
...Solution of Chloride of Gold and Platinum...
Samuel D. Humphrey 「American Handbook of the Daguerrotype」
...It is composed of colorless nitric acid(aqua-fortis) and ordinary muriatic acid; the mixture is yellow, andacquires the power of dissolving gold and platinum...
Samuel D. Humphrey 「American Handbook of the Daguerrotype」
..."One of the commonest instances ofthe use of a catalyst is the use ofsponge platinum in the manufacture ofsulphuric acid...
Various 「Astounding Stories of Super-Science February 1930」
..."The misty appearance inside and underneath it is given bythousands upon thousands of minute platinum wires...
Various 「Astounding Stories of Super-Science, November, 1930」
...He wore a white and purple robe; uponhis breast was a huge platinum ornament,a device like a star and cross entwined...
Various 「Astounding Stories of Super-Science, March 1930」
...On her tiny feet she wore sandalswhich were spun of webby filamentsof gold and platinum...
Various 「Astounding Stories of Super-Science, March 1930」
..."Radium is worth more than gold or diamonds or platinum...
Various 「Astounding Stories of Super-Science, June, 1930」
...It was a treasured thing, this locket of platinum on itsthin and lacy chain; it had been his mother's, and he thought of hernow as he opened the clasp to show his own face framed within theoval...
Various 「Astounding Stories of Super-Science, June, 1930」
...Here theyvisited a huge workshop or laboratory; there a mine where radium orcobalt or platinum was being wrested from the vitals of the unwillingearth...
Various 「Astounding Stories of Super-Science, August 1930」
...At the wide arc of the egg-shaped tube was a concave platinum cathode,at the narrow arc a nib of some sort, ending in a socket...
Various 「Astounding Stories of Super-Science, August 1930」
...The fact that its massive gold and itsscrollwork of inlaid platinum were worth a fortune meant nothing to himthen...
Charles Willard Diffin 「The Finding of Haldgren」
...The peculiar circumstances you refer to werethat you caught him stealing platinum...
Sterner St. Paul Meek 「The Solar Magnet」
...Thetemperature of the melting platinum wire could hardly be surpassed inthe most elaborate furnaces, but it does not attain the temperature ofthe sun...
Robert Stawell Ball 「The Story of the Heavens」
...Nearly all the heat of the sun passes through glass without hinderance;but take heat from white-hot platinum and only seventy-six percent...
Henry Warren 「Recreations in Astronomy」
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