agricultural research station in the world, it has been 

 found that the population of invertebrate fauna per acre 

 of fertilized land is fifteen million, of which eight 

 million are insects. 



Water is essential to soil development, as it is, indeed, 

 to all living things. 



Movement is of the essence of water, and the most demand- 

 ing intact of civilized man on his environment is the 

 shattering of this cycle of movement. The break is caused 

 by the destruction of plant cover, removing the sponge- 

 like texture of the complex topsoil - topsoil which, it is 

 estimated, took five hundred years per inch to build. 



"Yesteniay is dead. Forget it. Tomorrow does not exist. Don't worry, TODAY is 

 here. Use it." 



Montana Association of Soil Conservation Districts BULK RATE 



Montana State College (Return Postage Guaranteed) U.S. POSTAGE 



PAID 

 PEIiMI T #163 

 Bozeman, Montana 



55 i^e^aiiz/oa/cccp^c^: 



