A study was conducted to investigate the long term transfer effect of metaphoric allusion used to clarify unfamiliar subject matter. Forty-nine high school students were given unfamiliar prose materials variously augmented by metaphoric allusion. The subjects' immediate performance on a transfer task was compared to their performance on an identical task one week later. Significant differences associated with type of metaphoric allusion persisted over a period of one week, suggesting durable integrative effects stemming from use of metaphor to introduce novel information. (Author/RL)