18 
uniform diffusion of the R A F through the soil, caused by con- 
tinued tillage. The essential fact regarding the action of the 
radium is that each particle is shooting its rays in all directions 
The effect upon germination, when small amounts are used, was 
to increase the percentage of seeds germinated and to accelerate 
the process. 
The earliest effect of radium is to increase the root growth. 
Often the stem growth will be retarded for a time, but will 
later undergo a great acceleration. 
A given amount of sunlight has produced a greater amount of 
rowth when radium was used, and the same amount of food 
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a large amount of R A F is applied tothe soil. 
Perhaps the most important effect of the radium was that of 
improving the edible properties of the products. Potatoes were 
more mealy. Root crops were remarkably tender, sweeter and 
of finer flavor. Beets, carrots, onions, sweet corn and similar 
vegetables were markedly sweeter. Tomatoes were also sweeter 
and chemical analysis showed them to contain less water and 
more sugar. Radium-grown string beans and peas were peculi- 
* 
e results of experiments with turnips are of greater interest 
and perhaps of greater importance than any others secured. 
Two varieties were planted, one the ieee which ane a 
however, has not been fou 
nd unifor 
Norte f farm were subjected to eee 
ans ‘without finding any noteworthy or 
