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SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 51 



while become generally accepted, and since I have not been able 

 to find another appropriate term for the idea now under considera- 

 tion, therefore I think it allowable to apply the term "thermal con- 

 tent" in this place in a different sense. 



With this understanding I submit the following table 5. In 

 this table W, F, S, H, represent Winter, Spring, Summer, and 

 Autumn, respectively, and therefore the numbers in the column 

 under F-W represent the number of kilogram-calories that need to 

 be given to the unit-mass of air at the respective pressures or alti- 

 tudes in order to bring it under constant pressure from the tempera- 

 ture of winter to that of spring. 



Table 5. Seasonal differences in thermal 

 content of the atmosphere expressed in 

 calories, for vertical columns having 

 I square meter sectional area 



(a) FOR SUCCESSIVE PRESSURES 



0-4000 3990 



6910 



5360 I 5540 



The subsequent columns are to be understood in a similar way 

 but with this difference, that the numbers in the two last columns 

 indicate the quantities of heat that are to be abstracted from the 

 respective sections of the column of air to bring about the transition 

 from summer to autumn and from autumn to winter. 



Of course it is understood that all these numbers are fundamen- 

 tally only algebraic sums, since in reality the passage from one sea- 

 son to the next by no means implies continuous progressive addition 

 or abstraction of heat but processes that frequently alter within 



