CHAPTER V.

53. Dark Space around the Cathode. CROOKES

54. Relation of Vacuum to Phosphorescence. CROOKES

55. Phosphorescence of Objects within CROOKES Discharge Tube.

56. Darkness and Luminosity in the Arms of CROOKES a V Tube.

57. Cathode Rays Rectilinear within the CROOKES Discharge Tube.

58. Shadow Cast within the Discharge Tube. CROOKES

58_a_. Mechanical Force of Cathode Rays. Wheel CROOKES Caused to Rotate.

59. Action of Magnet upon Cathode Rays in CROOKES Discharge Tube.

60. Mutual Repulsion of Cathode Rays in CROOKES Discharge Tube.

61. Heat of Phosphorescent Spot. CROOKES

61_a_. Theoretical Considerations of Thomson (Kelvin).

61_b_, Velocity of Cathode Rays. THOMSON, J. J. page 46.

61_b_, Cathode Rays Charged with Negative PERRIN page Electricity. 47.

61_c_, Zeugen’s Photograph of Mt. Blanc Not Due to Cathode Rays.

62. Phosphorescence of Particular Chemicals GOLDSTEIN by Cathode Rays.

63. Spectrum of _Post_-phosphorescence of KIRN Discharge Tube Compared with that of Red-hot Metals.

63_a_. Chemical Action on Photographic Plate DE METZ by Cathode Rays Inside of Discharge Tube.

63_b_. The Passage of Cathode Rays through HERTZ Thin Metal Plates within the Discharge Tube (no. § 64).