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Mass. Most of us can remember when plant physiology was a study only for the favored student in a European university. To-day its elements are taught throughout the countr}^-in the schools. The interval has been marked by an effort so to simplify its appliances and methods that even a child may use them. The spirit of the movement is admirable, but its results are not wholly fortunate, mainly because it has been carried too far. For this extreme of simplification has too often produceddoi:10.1111/j.1949-8594.1906.tb00971.x fatcat:b4kijjkvjrfx3g6go3orqkn4eq