| =Action of Poisons.=--They may act either locally or only after absorption into the system. 1. Local Action, as seen in (a) corrosive poisons; (b) irritant poisons, causing congestion and inflammation of the mucous membranes--e.g., meta... Read more of Action Of Poisons; Classification Of Poisons at Forensic Medicine.ca | InformationalPrivacy |
![]() |
|
| Home - Chromatography - Color Value - Aesthetics - Photography | |
Most Viewed- Browns And The Cold Semi-neutral Grays Marrone Is Practically To- Also Called Scarlet Chrome Is A Bright Chromate Of Lead Of An - Black Chalk - Composition Chemical Analysis Has Shown Several Of The Blues To Be - Burnt Verdigris - Belong The Dutch And Flemish Schools; The Sensible Which Aims At - Less Known As English Red Prussian Red And Scarlet Ochre True - Olive In Dark Green; Russet And Citrine In Dark Orange The - Known Likewise As Raw Sienna Earth Terra Di Sienna &c Is A - Root Of The Anchusa Tinctoria Commonly Known As Alkanet A Plant Least Viewed- Sometimes Called China Or Chinese Ink Is Chiefly Brought From- Red On The One Hand And Of The Middle Tertiary Russet On The - Distilled Verdigris Or More Properly Refined Verdigris The Best Is - Molybdenum Green - Uniform Colour Thus Composed Is The Citrine Colour Of Fruit And - Or Lamblack Is A Smoke Black Being The Soot Procured By The Burning - While We Avoid The Compounding Of Contrasting Colours That Is The - Only That Of Extreme Light Objects Opaque It Follows That White Is To - And By Mixing Colours Or Tints With Black He Gets Shades It Is A - Secondary Colours Are Three Only Orange Green And Purple |
Or Iodine Scarlet Is An Iodide Of Mercury Having The Body Andopacity of vermilion, and being as much inferior to it in permanence as it is superior in brilliancy. Of all artistic pigments, it is at once the most dazzling and the most fugitive, and should have no place on the palette. If used, it should be with an ivory knife, as iron and most metals change it to colours varying from yellow to black; hence it should never be compounded with metallic pigments. So sensitive, indeed, is it to the slightest touch of metal, that it has been known to turn to a dull brown merely by being washed over with a colour which had been taken out of its saucer with a penknife. In the cake, it must be carefully kept wrapped up in paper, otherwise the presence of metal tubes or a knife in the colour-box may spoil it. By a foul atmosphere, the scarlet is soon utterly destroyed, and even metallized. In contact with the air, it quickly fades away; and has been found to vanish completely, when exposed to light alone. Employed in water, a thick glaze of gum-arabic or gamboge adds to its stability. As a landscape pigment, the colour is out of the general scale of nature; but in flower-painting its charms are almost irresistible. Nothing certainly can approach it as a colour for scarlet geraniums, but its beauty is almost as fleeting as the flowers. TTITLE RED CHROME, Next: Also Called Scarlet Chrome Is A Bright Chromate Of Lead Of An Previous: Spanish Red Is An Ochre Differing Little From The Above
Viewed 359 |
||||||||||||||||||||