TiiK struoturt; ok thk nijoi.kijs. 



61 



moisture {)recipitate(I pei- cub. oin. In the globe of 79 X 10"" grams were precipitated 

 witbiu the giveu exhaustion ; wheuce, siuce the density /j= 1, 



or, since (P = '1,^/^= {2.C>?,x ll^"^)^/A^, the e<piatiou for punk nuclei finally 

 becomes 



« =//X 8.3x10-4. 



For sulphur nuclei, siniilai'ly, <l^ = (.">.:") X 10"") :5/A^; whence 



7/, = 7V^X 3.6x10-4, 



11 being the absolute, A'' the relative number of nuclei per cub. cm. 



9. Tabulated results. — The new results ai'e fully given in tables ?> and 4, in 

 the manner just explained. The tvv<> tables are independent series of measurements 

 differing even as to nuclei. 



TABLE 3.— DIMENSIONS OF SUCCESSIVE CORONAS, SIZE AND NUMBERS OF 

 CLOUD PARTICLES IN WATER VAPOR. SULPHUR NUCLEI. EXHAUSTION, 



76 to 58 cm. /= 1.75 minutes. /' = .i. 7\''„ = 36,000. Mean .f TV == 4. 16. 



