Two of Mr. Andrews's rose bushes became infected with aphids. Mr. Andrews proceeded to spray one of the bushes with malathion insecticide but left the other bush untouched. The two bushes are both American Beauty, are five years old, have virtually identical locations, receive the same amount of water and sunlight, are planted in the same kind of soil, and receive the same degree of cultivation and the same amount of Bandini rose food. Within three days the aphids disappeared from the bush that was sprayed, but they continued to thrive on the other bush. Mr. Andrews concluded that the malathion killed the aphids on the bush that was sprayed. Construct a table that supports Mr. Andrews's conclusion. Which one of Mill's methods did Mr. Andrews use? What sense of causality is involved in the conclusion?