Aug. 1909.] 



Soil Bacteriology. 



227 



FIG. 2. Sample case, closed. 



FIG. 3. Sample case, opened. 



doing away with needless labeling of tubes. The case can be 

 transferred to the laboratory and the cultures made. 



The measure consists of a lath two feet long into which has 

 been bored one-half inch holes every two inches, commencing 

 with the second inch. 



Taking the Samples. To take the samples, dig a hole about 

 a foot square, to the required depth. With a sterile spatula 



