An extensive study of the relationship between the structure of a number of bis-epoxides and their activity against the Walker carcinosarcoma 256 in the rat has been reported by Ross.1 This study revealed a distinct correlation of the chemical reactivity of the epoxide function towards anions and the observed biological effectiveness. Diepoxybutane was found to be one of the most active compounds, while a few primary aromatic amine bisepoxides, e.g. N,N-bis(2,3-epoxypropyl)anisidine, were reported to possess low activity against the tumour system employed.

Research concerning work/family relationships have focused largely on the differentiation of the two roles. When job satisfaction and work performance are addressed, most writers tend to deal with variables other than and separate from family and personal life. However, it has been shown that the amount of time a vocational agriculture teacher spends in professional activities, especially after regular school day hours, has a direct effect on his or her spouse's marital satisfaction and perception of problems associated with the teacher's job (Coughlin, 1987; Straquadine, 1985). Studies dealing with teacher turnover have noted that the personal and family life of the vocational agriculture teacher can influence actions concerning the professional life. Teachers have indicated that "spouse's reaction to job obligation" (Cooper and Nelson, 1981) and "wife not happy with vocational agriculture profession" (Mattox, 1974) were among the many reasons they leave the profession.

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