ROTATION OF PLANE OF POLARIZED LIGHT. 



TABLE 1 99. 



A few examples are here given showing the effect of wave-length on the rotation of the plane of polarization. The 

 rotations are for a thickness of one decimetre of the solution. The examples are quoted from Landolt & Born- 

 stein's " Phys. Chem. Tab." The following symbols are used : 



/=: number grammes of the active substance in 100 grammes of the solution. 



c = " solvent " 



g " active " " cubic centimetre ' 



Right-handed rotation is marked + , left-handed. 



ROTATION OF PLANE OF POLARIZED LIGHT. 



TABLE 2OO. 



* The paper is quoted from a paper by Ketteler in " Wied. Ann." vol. 21, p. 444. The wave-lengths are for 

 the Fraunhofer lines, Angstrom's values for the ultra violet sun, and Cornu's values for the cadmium lines. 



SMITHSONIAN TABLES. 



IQI 



