UTAH ACADEMY OF SCIENCES 121 
The time of maturity of corn was delayed by irriga- 
tion, but hastened by manure. This is important since the 
earliness in maturity of corn is very desirable in Utah. 
The germination of corn was most rapid and complete 
in a soil containing a medium amount of soil moisture. 
The number of stomata on a given area of leaf surface 
was increased by a large amount of soil moisture. This 
probably causes wastefulness in transpiration. 
The proportion of roots to tops was increased by lower- 
ing the soil moisture. When deep rooting is desired, over 
irrigation should, therefore, be avoided. 
