1909.] PUBLIC DOCUMENT — No. 31. 61 



this method effectual. The application of unslaked lime, how- 

 ever, will materially aid in drying the soil, by virtue of the 

 water-absorbing qualities of the lime. 



Inundation. — The effects of water on eel worms have al- 

 ready been alluded to, and in some instances inundating or 

 flooding the soil might be successful. 



Trapping, or the Catch-crop Method. ■ — It has been found in 

 Germany that sowing very susceptible crops, like mustard or 

 rape, on soil contaminated with eel worms, and, after the fe- 

 males have become encysted in the roots, pulling up the plants 

 and exposing them to the drying rays of the sun, is capable of 

 reducing the worms to some extent in contaminated soils. We 

 have found, however, that two or three catch crops are much 

 better than one. 



