THE SOIL IN ITS RELATION TO DISEASE 



Dailj Velocity of WiTicl in MiUs 



Carooiuc Acid m Soil - ttir 

 N?-1I Set cf tubes. N'.'l S«t, of t-otes. 



CHART IV. 



Daily "• e'lOfitv of Winl in Miles . 



The Relation of the Velocity of the "W 



N?. II S'»t of luces N? 1 Set of -Voss 



Ckxltonic Acid in Soil aar 



iND TO THE Amount of Caebonic Acid in Soil-air. 



