LIST OF FIGURES. 



CIIAPTKU I. 



PAHK 



FluURE 1. Apparatus for lifuting nucleateil air 2 



FluURE 3. Section of the tubular condenser showing;- tlie vapor jacket 3 



Figure 3. Dependence of the reciprocal nucleation rate (dVjdt) on temperature 4 



FiGORE 4. Dependence of the nucleation rate (dtjd V) on temperature 4 



FKiURE 0. Comparison of the rates of electrical discharge and of volume efflux 4 



FniURES 6 to 10. Variation of the logarithmic rate of electrical discharge with temperature, (d^ldf)oli 



and II 



Figure U. Ionization due to dried phosphorus in the lapse of time 11 



CHAPTER II. 



Figure 1. Condensation tube 25 



Figure 3. Condensation disc ~5 



Figure 3. Condensation globe ■"' 



Figure 4. Chart illustrating the nature of the time losses 33 



Figure 5. Chart for computing the time coefficient 32 



Figure 6. Conical drum. Receptacle for condensation 40 



Figure 7. Double conical drum. Receptacle for condensation • 40 



Figure 8. Diagram relating to diffraction and to axial colors 40 



CHAPTER III. 



Figure 1. Goniometers and appurtenances, lo, horizontal form ; 16, vertical form 53 



Figure 3. Condensation chamber, N: filter, F: gauge, G : exhaust pipe, E 53 



Figure 3. Chart showing the diameters (cm) of cloud particles of benzol in the successive exhaustions. . . 54 

 Figure 4. Chart showing the decrease in aperture (s) of the coronas of benzol vapor, during the suc- 

 cessive exhaustions ; also the final apertures of water and petroleum vapor in the same scale 54 



Figure 5. Chart showing the accelerated removal of cloud particles in the final exhaustions (numbers 



z on curves) 



Figure 6. Chart showing the subsidence of fogs of diflferent orders (numbers z on curves), in the lapse of 

 time. Fall (/) in cm, time (t) in minutes 



63 

 63 



CHAPTER IV. 



Figure 1. Diagram '^■^ 



Figure 2. Campanulate coronas due to distribution of nuclei, graded in the ratio of a = dSldli = .0005, 

 .00010, .00035, .000.5(1, and .00100. Corresponding curves have the same numbers above and below 



the horizon '"^ 



Figure 3. Graphs showing the increase of nucleation occurring spontaneously in CS„ vapor ; s, coronal 

 apertures in the lapse of hours ; d, diameters of particles (in centimeters for identical supersatura 



tions) after the lapse of hours 



xiii 



88 



