296 SMITHSONIAN misce;i.i.ane;ous coIvLections vox,. 52 



I. Bibliography. 

 II. General Description. 



III. Experimental Results. 



1. Apparatus. 



2. Color of the bundles of rays. 



3. Propagation of the rays. Direction and dispersion. 



Absorption and reflection. 



4. Fluorescence excited on glass wall and on metallic salts. 



5. Charge carried by rays. 



6. Magnetic deflection. 



7. Electrostatic deflection and acceleration. 



8. Simultaneous magnetic and electrostatic deflection. 



9. Secondary emission of negative rays. 



10. Chemical effects. 



11. Mechanical effects. 



Disintegration of metals struck. 

 Penetrating power. 

 Heating effect. 



12. Miscellaneous effects. Ionization and screening. 



13. Spectrum of light from canal rays. 



Spectrum and Doppler effect in various gases. 

 Shift of lines toward red. 

 Broadening of lines. 



14. Partial polarization of light. 



IV. Mathematical Theory. 



1. Notation. 



2. Equations for energy, velocity, and specific charge of rays. 



3. Calculations. Specific charge and velocity of rays. 

 V. Theoretical Discussion and Explanation. 



1. Constitution of the rays. What are they? 



Place of origin. 



Explanation of non-homogeneity. 



2. Light from the rays. 



Carriers of line and band spectra. 

 Intensity distribution in Doppler effect. 

 Emission of light by an atom. 



3. Chemical effects. 



4. Secondary emission of negative rays. 



I. BIBLIOGRAPHY. 



Andi J. ANDERSON Astrophys. Journ. 24. 362-4. Dec, 1906. 



An W. ARNOLD Wied. Ann. 61, 325-7. Mar. 10,1897. 



Rev. (ficl. filectr. 12, 320). 



Aui L. AUSTIN Bull. Bur. Stand, i, 439-41. Nov., 1904. 



Au2 " " Phys. Rev. 22, 312-9. Feb. 10, 1906. 



Rev. (£cl. filectr. 47, 423). 



Bgi O. BERG Wied. Ann. 68, 692-7. June 11, 1899 



Rev. (ficl. filectr. 22, 68-9). 

 Boi E. BOSE Zeitschr. Phys. Chem. 34, 717-21. Sept., 1900. 



