Why These Dogs are Good and others are not is the goal of research being conducted by these scientists at Bar Harbor, Me. They are members of the staff of the Hamilton Station of the Jackson Memorial Laboratory investigating mammal genetics. From left to right the scientists are, back row, Dr. Calvin H. Hall of Western Reserve University, psychologist; Dr. Clarence Cook Little, director of the Laboratory and noted cancer researchist; and Dr. John L. Fuller of the University of Maine; front row, Miss Edna DeBuis of New Jersey; Dr. John Paul Scott, behavior studies at the laboratory; and Dr. Benson Ginsburg of the University of Chicago.