1. A CLAMP ASSEMBLY FOR A RESILIENT HARROW TOOTH, INCLUDING IN COMBINATION A RIGID SOIL WORKING MEMBER HAVING A PAIR OF OPPOSITELY INCLINED UPPER SURFACES, A RESILIENT SUPPORT FOR SAID SOIL WORKING MEMBER INCLUDING AT LEAST ONE SPRING MEMBER, AND A CLAMP COMPRISING A PAIR OF SPACED OPPOSED ARMS CONNECTED TOGETHER AT ONE END BY A TRANSVERSE MEMBER, A CLAMPING MEMBER INTEGRAL WITH EACH OF SAID ARMS ABOVE SAID TRANSVERSE MEMBER AND MOVABLE WITH THE CORRESPONDING ARM, SAID CLAMPING MEMBERS EXTENDING INWARDLY TOWARD EACH OTHER AND HAVING COMPLEMENTARILY FORMED INCLINED CLAMPING SURFACES POSITIONED TO OVERLIE AND MAKE FLUSH ENGAGEMENT WITH THE RESPECTIVE INCLINED UPPER SURFACES OF SAID SOIL WORKING MEMBER, SAID CLAMP BEING SIZED AND POSITIONED TO RECEIVE SAID SPRING MEMBER THEREIN IN ABUT-