Show air and water air Is just as necessary an ele anent in the soil as the water but both must be there in proper quant ties there 1 too much air and loo little moisture nitrification ceases i it there is too much moisture and too little air the effect Is the from ten ears experience and observation we have concluded that a certain chemical action must be practically continuous in the eoll during the growing season it w are to grow the largest crops this chemical action Is unquestionably dependent upon just a certain ideal or perfect condl uon of the soil a physical condition that will carry in the soil lust the ideal quantity of both air and water and then as soon as the eoll be cornea warm natures work begins |