The Photographic News, Volume 53William Crookes, George Wharton Simpson Cassell, Petter, and Galpin., 1908 |
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Page 6
... sulphides of iron . Where a high oxygen : hydrogen sulphide ratio exists the corrosion film also is likely to contain iron oxides and free sulphur . In gen- eral , sulphide films are permeable and for that reason do not pro- tect ...
... sulphides of iron . Where a high oxygen : hydrogen sulphide ratio exists the corrosion film also is likely to contain iron oxides and free sulphur . In gen- eral , sulphide films are permeable and for that reason do not pro- tect ...
Page 3
... sulphide minerals , a mixed potential model was established , in which there existed a potential at which an anodic reaction of xanthate to form ... Sulphide Minerals 1.2 Natural Floatability and Collectorless Flotation of Sulphide Minerals.
... sulphide minerals , a mixed potential model was established , in which there existed a potential at which an anodic reaction of xanthate to form ... Sulphide Minerals 1.2 Natural Floatability and Collectorless Flotation of Sulphide Minerals.
Page 66
... sulphide core representing the center of hydrothermal fluid discharge to bedded sulphides facies . The bedded sulphide facies are zoned from a vent - proximal Pb - Zn- Fe facies to more distal barite - sulphide and sulphide- quartz ...
... sulphide core representing the center of hydrothermal fluid discharge to bedded sulphides facies . The bedded sulphide facies are zoned from a vent - proximal Pb - Zn- Fe facies to more distal barite - sulphide and sulphide- quartz ...
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A. H. Blake acid Alvin Langdon Coburn AMATEUR PHOTOGRAPHERS amidol Arthur Marshall artist autochrome awarded BARNET Barnet Ortho bath best picture bromide paper bromide print carbon carbon print chloride chrome alum colour dark dark-room developer dissolved effect enlarged exhibition exposure Extra Rapid Plate foreground gelatine give glass hand camera hypo ILFORD interest Kodak landscape Lantern Slides Lecture lens light and shade London Malcolm Arbuthnot MAWSON Medium Messrs method metol minutes mount negative obtained ordinary plate Ortho plate ounces Paget Percy Lewis Photographic Society pictorial piece platinotype portrait potassium practical prize pyro pyro-soda RAJAR readers result Road Rodinal Royal scenes screen sensitised shadows shutter side silver silver bromide silver nitrate sodium solution Special Rapid speed Street sulphide Technical data Thornton-Pickard toning washing week Weekly Competition WELLINGTON workers WRATTEN yellow