100 



CIVIC BIOLOGi' 



Pkudlci: in Eleven Yeaj;.s, per Acke 



Learn the results of local experiments in fertilizing land 

 and collect all available records and data on local soil analyses 

 and surveys. The possible value of such work is well demon- 

 strated in the following from the Osw^ego Experiments with 

 strawberries : 



IvR'n BoTTu.M Land, Season eaiklv Di;v (IS!)?) 



Plat I : ooO 11). dissolved rock i)er acre ; yield, 13,597 ({t. 

 Plat II : 700 lb. dissolved rock per acre; yield, 2(),0()(J (jt. 



(An ex})eiise of $7.00 made a gain of $353.55 over Plat I.) 



Value of land. Some land may be dear as a gift. Agi'icul- 

 tural nitrogen is worth |0.15 a pound, potassium $0.06, ground 

 limestone $0,005, and phosphorus $0.0o. At these prices let us 

 compare the values of two samples of land. 



Pounds in 2,000,000 Pounds of Soil 



Of course, beyond a certain limit additional amounts of any 

 plant food may not be of immediate value, but the above fig- 

 ures hidicate a fundamental reason for the rush of agricultural 

 emigration to the northwest. Still, with all the experience of 



