I/O 



PRINCIPLES OF STRATIGRAPHY 



Table oj Analayses of 



The HNO3 ia found in some waters not included in this table. It is listed here on account of its interest as 



Composition (in Percentages of Total Gases) of Dissolved Air in 

 Rain Water at Different Temperatures. 



The absolute amounts of the different gases vary more markedly 

 with different temperatures. Thus a liter of pure surface water, 

 under a normal barometric pressure of 760 mm., contains the fol- 

 lowing absolute and percental amounts of dissolved gases in c. c. 

 (Krummel-20: i-pj; Forel-8:95 gives somewhat different val- 

 ues.)* 



* See also Cyrus F. Tolman (39). 



