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industry. A willing mind and determination to persevere is, in my opinion, the most direct road to success ; we must, however, exercise a sound judgment in the selection of subjects on which to exercise our thoughts."

I do not think it necessary to quote the instances where either parent is also spoken of as being remarkably persevering ; these may be taken for granted. I find that the father is referred to in strong terms eight times, and the mother only twice.

As a set-off to the above, Impulsiveness is not confessed to by a single physicist, chemist, or mechanician. It is equally absent in their parents, with the exception of the mother of one of them. Among the remaining men of science, I only find 5 cases, but these are mostly combined with some tenacity of purpose, and they are all inherited.


Some prevalence of practical business habits might also have been anticipated, but they prove