4 REPORT ON INJURIOUS INSECTS FOR 1904. 



that the soil was very rich, and was largely from a tomato house, 

 the plants in which the previous year had all died from some 

 unknown cause. Mr. Warburton's report at once came to my 

 mind; and upon taking up a plant, we found plenty of the 



FlG. I. ROOTS ATTACKED BY ROOT-KNOT EELWORM. 



a. Roots of Cucumber, b. Roots of Tomato. 



