To obtain the typical representation of a class is something that painters and novelists have always professed to do, and it is something which they have nearly always failed in accomplishing. The ...
MAY I be permitted, as an intimate friend of many years and under deep obligations to the late Sir Francis Gallon, to say a word upon a matter which is perhaps not sufficiently emphasised? I refer to ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
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