Word: pigment
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Whitey is an albino for the same reason that occasional humans are: congenital lack of black pigment cells in the skin. For some reason albino frogs are far rarer than albino humans, lobsters, squirrels, peacocks, porcupines. About one out of every seven normal humans carries the albino inheritance in his germ-plasm as a recessive Mendelian character, and one person in every 25,000 is an albino. Albinism has been recorded in the great majority of animal and plant species. But Dr. Noble, contemplating Whitey, guessed that possibly not more than one like her could be found among millions...
...hurried across the moonlit award and slipped into his arms. They kissed, and then stood for a long time whispering. At intervals, in the pale light, their faces fused. His the eager artist's, burning with creation; her's with a strange detachment--one day to be immortalized in pigment. At last they moved apart and then stole quickly down the garden path to a door in the old wall. The man opened it, the woman stopped through. He followed her, pulling the door behind him without turning. Over the garden wall, borne back on the fragrant darkness...
...Whistler have cracked, faded and fallen to pieces in 30 years there has been an ever-increasing interest among serious painters in the chemistry of their craft. Before the Brothers van Eyck popularized the use of oils in the 15th Century, almost all painting was either in fresco (pure pigment mixed with water and applied to wet plaster) or in tempera (ground pigments mixed with beaten egg and water and applied either to wood or canvas that is prepared with a plaster-like ground). Oil painting is easier and quicker, but fresco and tempera do not fade. In Manhattan last...
Museum officials have also been cleaning some Chinese wall paintings, almost a thousand years old, which have been taken in pieces from the walls of caves. First the ancient pigment film is given a thorough cleansing and several layers of Japanese tissue and muslin are glued to the clean surface...
...clay on which the picture was originally painted is then scraped from the back side and the inner surface of the paint is cleansed. A new base of clay on presswood is affixed and the muslin-tissue support is dissolved from the face. Thus only the pigment, about a sixteenth of an inch thick, is kept intact during the process of restoration...