434 



and any influence upon the climate, which the variations of this 

 percentage may exercise (pp. 425 — 28). 



6. The percentage of carbonic acid in the air of the 

 Island of Disko in Greenland was found by analyses made in 

 the summer of 1902 to be very great (up to 0.07 °/o) and 

 extremely variable (0.025 — 0.07 "/o) , being high from northern 

 and western winds and low from southern (pp. 409 — 16). This 

 phenomenon cannot, be explained by any enhanced production 

 of carbonic acid from the land, but may possibly be due to 

 a liberation of the gas from the sea, such as will take place 

 if bottom-waters, possessing a high tension, should rise to the 

 surface (pp. 429—32). 



