6Radio-active Minerals.
32Chemical Effects produced by the New Radio-active Bodies.
7Chapter II. Method of Research.
33Physiological Effects.
8Polonium, Radium, Actinium.
34Influence of Temperature upon Radiation.
9Spectrum of Radium.
35Chapter IV. Communication of Radio-activity to Substances Initially Inactive.
10Extraction of the New Radio-active Substances.
36Activity Induced in an Enclosed Space.
11Polonium.
37Part played by Gases in the Phenomena of Induced Radio-activity.
12Preparation of the Pure Chloride of Radium.
38Dissipation in Free Air of the Induced Activity of Solid Bodies.
13Determination of the Atomic Weight of Radium.
39Dissipation of Activity in a Confined Space. Velocity of Destruction of the Emanation.
14Characteristics of the Radium Salts.
40Variation of Activity of Liquids rendered Active and of Radium Solutions.
15Fractionation of Ordinary Barium Chloride.
41Theory of Radio-activity.
16Methods of Investigation of the Radiation.
42Another Form of Induced Radio-activity.
17Energy of Radiation.
43Induced Radio-activity with Slow Dissipation.
18Complex Nature of the Radiation.
44Radio-activity Induced upon Substances in Solution with Radium.
19Action of the Magnetic Field.
45Dissemination of Radio-active Particles and Induced Radio-activity of the Laboratory.
20Deflected β-Rays.
46Activity Induced Outside the Influence of Radio-active Substances.
21Charge of the Deflected Rays.
47Variations of Activity of Radio-active Bodies. Effects of Solution.
22Action of the Electric Field upon the Deflected β-Rays of Radium.
48Variations of the Activity of Radium Salts on Heating.
23Relation of the Charge to the Mass for a Particle Negatively Charged Emitted by Radium.
49Theory of Interpretation of the Causes of Variations of Activity of Radium Salts after Solution and after Heating.
24Action of the Magnetic Field upon the α-Rays.
50Nature and Cause of the Phenomena of Radio-activity.
25Action of the Magnetic Field on the Rays of other Radio-active Substances.
51Conclusions.
26Proportion of β-Rays in the Radiation of Radium.
