HARNESSING 

 THE EARTHWORM 



A practical inquiry into soil-building, soil- 

 conditioning, and plant nutrition through 

 the action of earthworms, with instructions 

 for intensive propagation and use 

 of Domesticated Earthworms 

 in biological soil-building. 



THOMAS J. BARRETT 



BOSTON 



BRUCE HUMPHRIES, INC. 

 PUBLISHERS 





