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More "Coloration" Quotes from Famous Books
 ... hydroxide solutions precipitate green chromium hydroxide from solutions of chromic salts; the precipitate is soluble in excess of the cold alkali, but is completely thrown down on boiling the solution. Chromic acid and its salts, the chromates and bichromates, can be detected by the violet coloration which they give on addition of hydrogen peroxide to their dilute acid solution, or by the fact that on distillation with concentrated sulphuric acid and an alkaline chloride, the red vapours of chromium ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 - "Chitral" to "Cincinnati" • Various
... carried out thus: Add to the liquid in the beaker a few drops of the ferric-alum solution to act as an indicator, and from a burette carefully drop in centinormal ammonic thiocyanate until a permanent red coloration of ferric thiocyanate barely appears. The number of cubic centimeters used of the thiocyanate solution multiplied by 0.00168 gives the amount of uric acid in the 25 c.c. One milligramme may be added to compensate for loss, and the whole multiplied by four gives the percentage of uric ...
— Scientific American Supplement, No. 611, September 17, 1887 • Various
... solution obtained by this process from the commercial hypochlorites, pour into a glass about 20 c.c. of the solution and drop on the surface of the liquid a few centigrammes of phenol-phthaleine in powder. The correct solution does not give any coloration while Lebarraque's solution and Rau de Javel will give an intense red color which shows in the last two solutions existence ...
— A Journey Through France in War Time • Joseph G. Butler, Jr.
... like the background against which it stands. A host of animals find their main safety in being indistinguishable in color from the surface on which they live. There are many biologists who seriously question whether protective coloration, as Darwin called it, is as effective as he believed it. In some quarters it is the present fashion to doubt protective coloration entirely. No one has yet shown any principles which will better explain ...
— The Meaning of Evolution • Samuel Christian Schmucker
... benefit of the lay reader, I ought, perhaps, to have explained before this that the Philadelphia vireo is in coloration an exact copy of the warbling vireo. There is a slight difference in size between the two, but the most practiced eye could not be depended upon to tell them apart in a tree. Vireo philadelphicus is in a peculiar case: ...
— The Foot-path Way • Bradford Torrey
... I have a pretty talent for copying plant and insect. I have but little originality, but this very limitation made the drawings more valuable. They were almost painfully exact, the measurements and coloration being as approximately perfect as ...
— Slippy McGee, Sometimes Known as the Butterfly Man • Marie Conway Oemler
... accidental appositeness to some contemporaneous situation, these may become generally current. A recent and familiar example is the term "camouflage," which from its technical sense of protective coloration has become a universally understood name for moral and intellectual pretense. The vocabulary of baseball has by this time already given to the language words that show promise of attaining eventual legitimacy. An increasingly ...
— Human Traits and their Social Significance • Irwin Edman
... lower and he saw that the buildings were obviously green to lend them a certain protective coloration similar to that of the green jungles around them. The tower with its surmounting cage puzzled him though, but before he could ask Sarja concerning it his answer came in a different way. A long metal tube poked slowly out of the cage on the ...
— Astounding Stories of Super-Science, August 1930 • Various
... fuscus. (Beauvois). BIG BROWN BAT.—One big brown bat was obtained on July 23, 1952, from one mile west of Niobrara, Knox County. While not so dark in dorsal coloration as some specimens of E. f. fuscus from eastern Nebraska (Cass and Sarpy counties), this specimen is noticeably darker than a series of E. f. pallidus from Ft. Niobrara Wildlife Refuge, 4 mi. E of Valentine, Cherry County, being near (16" j) Snuff Brown as opposed to near (16' i) Buckthorn ...
— Distribution of Some Nebraskan Mammals • J. Knox Jones
... a general way, they are bare masses whose coloration trembles between misty blue and mauve according to distance, light, and hour of day. As building-stone, the rock imparts a grey-blue tint to the walls. The very flowers are blue; it is a peculiarity of limestone formation, hitherto unexplained, to foster blooms ...
— Alone • Norman Douglas
... to a lilac or pearl gray if it is iodine-violet (Hoffman's). It will also turn from red to yellow in lemon juice. To test for the other three violets: (a) Apply chloride of lime, to be followed by a solution of yellow prussiate of potash: absence of a blue coloration leaves orchil and logwood to be considered. To distinguish between them apply solution of hydrate of lime, whereby a change to gray, followed by complete decoloration indicates logwood, and ...
— Forty Centuries of Ink • David N. Carvalho
... everything edible except spinach—and starve gracefully on a diet composed exclusively of boiled spinach, with the prospect of dying a dark green death in from three to six weeks and providing one's own protective coloration if entombed in a cemetery ...
— One Third Off • Irvin S. Cobb
... hand outward from the small of the back. (Wied.) This, as explained by Indians lately examined, indicates the lighter coloration upon the animal's flanks. A Ute who could speak Spanish accompanied it with the word blanco, as if ...
— Sign Language Among North American Indians Compared With That Among Other Peoples And Deaf-Mutes • Garrick Mallery
... calendered paper, first partially wet and then dried, is subjected to the action of iodine vapor, the parts which have been wet take on a violet tint, while those which had not been moistened became either discolored or brown. The intensity of the coloration naturally varied according to the length of time for which the paper was exposed ...
— Disputed Handwriting • Jerome B. Lavay
... some special significance. In 1880, the opening of a cave of the Stone age in the district of Anagni, a short distance from Rome, brought to light the facial portion of a human cranium, colored bright red with cinnabar. Nor are these by any means exceptional cases, for similar coloration was noticed on bones picked up at Finalmarina and several other places in Liguria and Sicily. The custom had therefore become general in the Neolithic period in the whole of the Italian peninsula.[283] We also meet with it in other countries; at the ...
— Manners and Monuments of Prehistoric Peoples • The Marquis de Nadaillac
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