12 



Trans. Acad. Sci. of St. Louis. 



m 



m 



mwmmmmmm'mmwwmmm 

 M®mmmmmmm%mmmmw m 

 m^mmmmmmmmmmmmmm 





m 



mm 



Km 



Bkmmmmmmmmmmwmmmm 

 m\ 



SS^iln^iiuiisiB«Eiffii 





■npiBUiauUHH!! 



CO 



Explanation. — Atm., Assumed theoretic upper limit of atmosphere; 

 Phot., Photosphere; C.T.K. = If, Arbitrary Curve of temperature for k = 

 15; C.T.K. = 1*4, Arbitrary Curve of temperature for k= 1-4; C.D.K. = 14, 

 Absolute Curve of density for A; = 1*4 ; C.D.K. = 1|, Absolute density for 

 *=1|. 



