. American chemical journal . the solutions were taken from the tablesof Landolt and Bornstein and the Smithsonian PhysicalTables. All solutions were made up on the percentage basis. Someof the data recorded in this paper have been calculated fromthe measurements of refractive indices made by other work-ers. Where such material has been drawn upon, suitableacknowledgment will be made in the proper place. If the specific refraction of a solution of definite percent-age concentration is known and the specific refraction of thesolvent is also determined, the specific refraction of. the solute « P
. American chemical journal . the solutions were taken from the tablesof Landolt and Bornstein and the Smithsonian PhysicalTables. All solutions were made up on the percentage basis. Someof the data recorded in this paper have been calculated fromthe measurements of refractive indices made by other work-ers. Where such material has been drawn upon, suitableacknowledgment will be made in the proper place. If the specific refraction of a solution of definite percent-age concentration is known and the specific refraction of thesolvent is also determined, the specific refraction of. the solute « Pogg. Ann,, 123, 595. 470 Getman and Wilson. may be easily calculated. In Fig. I., let 0 be the origin of asystem of rectangular coordinates, in which abscissae denotepercentage concentrations and ordinates specific A represent the pure solvent of specific refraction R, letB denote the solution of concentration p and specific refrac-tion i?i, and let C be the pure solute whose specific refractioni?2 is Fig. I. From the diagram it is evident thatR — R,_ R — R, or
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