XVI LIST OF FIGURES. 



PAGE 



Figure ii. Chart for Table 15, showing same 90 



Figures 12 and 13. Charts for Table 18, showing the relation of the apertures of the coronas to the 



number of exhaustions go 



Figure 14. Chart showing the effects of different valves with nucleations increasing in the lapse of 



time 83 



CHAPTER VII. 



Figure i. Micrometric apparatus 102 



Figure la. The same mounted in condensation chamber 103 



Figure 2. Capsule. Plan 103 



Figure 3. Same. Sectional elevation 103 



Figures 4-6. Diagrams showing the behavior of fog particles 105 



Figure 7. Chart giving d in terms of x 108 



Figure 8. Diagram of "Crater." 113 



Figure 9. Diagram showing circulation 113 



Figure 10. Micro-photographs of fog particles 116 



CHAPTER VIII. 



Figure i. Condensation chamber. Sectional elevation 129 



Figure la. The same in full 129 



Figures 2-4. Graphs showing the progress of diffusion in the lapse of time 131 



Figure 5. Apparatus to detect ionization produced by sudden condensation 137 



CHAPTER IX. 



Figure i. Diagram showing general disposition of apparatus 140 



Charts 1-48. Daily observations of the atmospheric nucleation of the city of Providence 141 



Charts 49 and 50. Mean daily nucleations in thousands per cubic centimeter 223 



Chart 51. Mean monthly nucleations from October, 1902, to October, 1904, in thousands per cubic 



centimeter ' 224 



