30 MUCK CROPS 



heavy soil composed of sand weighing no 

 pounds a cubic foot an equal amount of muck 

 weighing 40 pounds a cubic foot, the result 

 would be a soil weighing 75 pounds a cubic 

 foot. If a soil of mixed sand and clay weigh- 

 ing 96 pounds a cubic foot is mixed with 

 muck weighing 40 pounds a cubic foot, the 

 resulting soil would weigh 68 pounds a 

 cubic foot. 



Spreading lime on muck, March, 1915. E. R. Hay, 

 North Rose, N. Y. 



The increasing of the absorption of solar 

 heat by such a soil would be the second bene- 

 ficial result. An important factor in the 

 growth of vegetation is the quantity of heat 

 absorbed from the sun by the earth. Physic- 



