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that enters into all teaching, of which it is difficult to give any conception in a narrative of results, and that is time. I had been steadily at work with Ulysses for nearly a year before I began to use the blackboard, and after I adopted that assistant it was many months ere important results began to show themselves. Any one who has ever labored with a well-meaning but obtuse pupil, will appreciate how slow and discouraging at times my work must have been. He
