12 



Trans. Acad. Sci. of St. Louis. 



ilaHBHHBaBSBHBIHBBn 



lllfil^flBnBaHKaHHBH 



BwegiBBiiasii 



IWBESiBBliS 



InBHiSeiH 



■ilHHBBBa 



BBBBiailB 



■■WBSail—MMIKMII 



8 



CO cc 



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

 Phot., Photosphere; C.T.K. = 1|, Arbitrary Curve of temperature for k = 

 If; C.T.K. = 1-4, Arbitrary Curve of temperature for ^=1-4; C.D.K. = 14, 

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

 *=1|. 



