Sur l'unité d'origine du bleu de l'eau

in Bulletin de la Classe des Sciences. Académie Royale de Belgique (1899), (2), 72-80

Spring, W. Bull. Acad. roy. Belg. (1899), 72; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). Tyndall's experiments have been repeated and it was ... [more ▼]

Spring, W. Bull. Acad. roy. Belg. (1899), 72; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). Tyndall's experiments have been repeated and it was found that suspended particles do not give a blue color to the water. Further experiments showed that fluorescence was not a factor, and the final conclusion reached is that the blue color of water is due simply and solely to the fact that water is blue in color. Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved. [less ▲]

Sur la capacité de saturation des combinaisons colloïdes

in Archives des Sciences Physiques et Naturelles (1911), XXX

Spring, W. Archives des Sciences Physiques et Naturelles (1911), 30, 561-71; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). cf. C. A., 4, 138, 969 ... [more ▼]

Spring, W. Archives des Sciences Physiques et Naturelles (1911), 30, 561-71; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). cf. C. A., 4, 138, 969, 1911. This is a report of some suggestive expts. on the mutual adsorption relations of saponin, lampblack and filter paper. When varying amts. of saponin are added to a standard suspension of lampblack in water the solns. of high and of low conc. settle faster than do the intermediate ones. There is an optimum stability at a conc. of saponin between 2.0 and 3.5%. In an elec. field saponin moves toward the anode, lampblack toward the cathode. When saponin is added to a lampblack suspension and an elec. current is passed the lampblack moves toward the anode-a reversal of the direction which it exhibits when alone. When a suspension of lampblack is poured through a filter the paper retains a part of the lampblack and this retained portion cannot be removed by washing with water, even when the filter is reversed. But if a soln. of saponin be poured through the blacked filter a portion of the retained lampblack is given up and passes through with the soln. A crayon made by molding a mixture of wet clay with lampblack or finely ground graphite marks paper easily and leaves a mark which is erased with difficulty. If, however, a soln. of saponin be used to moisten the clay-lampblack mixture the crayon is harder, marks paper with difficulty and the mark is easily erased. Similar results are obtained when the paper, instead of the crayon, is impregnated with saponin. When filter paper pulp is mixed with a lampblack suspension and collected on a cloth filter, the pulp retains some of the lampblack and the amt. so retained is sensibly independent of the conc. of lampblack in the original suspension. The author makes certain applications to the action of soapy substances in the cleansing of fabrics and concludes that there exists a limiting "saturation capacity in the combinations between colloids" which is analogous to the saturation of one atom by chem. combination with another. [This conclusion is quite out of accord with the existing knowledge of the form of the absorption isotherm and is not supported by the evidence presented. Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved. [less ▲]

Sur la cause de l'absence de coloration de certaines eaux limpides naturelles

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-arts de Belgique. Sciences. 3e série (1898), XXXVI(9-10), 266-276

Spring, W. Bulletin de la Classe des Sciences, Academie Royale de Belgique (1898), 38(3), 266-76 ; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010 ... [more ▼]

Spring, W. Bulletin de la Classe des Sciences, Academie Royale de Belgique (1898), 38(3), 266-76 ; SciFinder (Chemical Abstracts Service: Columbus, OH); https://scifinder.cas.org (accessed July 8, 2010). Tying to its earlier reports over the role of the iron compounds and the humin substances with the feature of the coloring of water and over the elimination of this substances under influence of sunlight, etc. (Bulletin Acad. roy. Bolgique [3] 34. 578; C. 98. I. 410 and Rec. trav. chim. Pays-Bas 17. 202; C. 98. II. 224) author the cause of the colorlessness many discusses clear waters, about what already Berzelius (Annual Report f. Chemistry 9. 207) expressed its astonishment. Terrestrial water only very rarely will appear blue, since in all ground are traces of hematite, and this the blue color water for our eye compensates. On the other hand the glaciers and the snow of high peaks do not contain hematite, water from high regions throw their blue and therefore can maintain their color. Furthermore the influence of the iron compounds on the coloring water is very differenct, depending on whether they are in the form of their hydrates or anhydrous oxides in the water; into latter trap they step with the Humin or the organic substances water not into reaction, the water more generally continues to appear colorless. Reprinted with the permission of the American Chemical Society. Copyright © 2010. American Chemical Society (ACS). All Rights Reserved. [less ▲]

Sur la cause de l'apnée

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (1900)

Sur la cause de la fétidité de certains calcaires

in Annales de la Société Géologique de Belgique (1889), XVI

Sur la chaleur des alliages de plomb et d'étain

in Bulletin de la Société Chimique de Paris. Nouvelle série (1886), XLVI

Sur la circulation céphalique croisée ou échange de sang carotidien entre deux animaux

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (1887), XIII

Sur la concentration moléculaire des solutions d’albumine et de sels

in Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique. Sciences (1902)

Sur la concentration moléculaire des tissus solides des animaux d’eau douce

in Annales de la Société de Médecine de Gand (1876)

Sur la concentration moléculaire du sang et des tissus chez les animaux aquatiques

in Archives de Biologie (1904), XX