Abstract
THE anonymous author of this little work of sixty-eight pages has produced a very readable and in many ways admirable primer of Magnetism for boys and girls. Clearly written, well illustrated, and dealing with such matters of experiment as boys and girls can verify for themselves, it will be sure to command popularity. The experiment on p. 22, which suggests the form of the curve of magnetic intensity along a bar-magnet by the length of the chain of nails which can be hung on at equidistant points, thus building up visible ordinates on the abscissæ is new to us, and as neat as novel. One cannot help wondering, however, why the author has assumed that “high-schoo1” pupils must have mathematics and even arithmetic kept almost entirely out of sight. Why the separate chapters are entitled as “Lectures” is not very evident. The “Lecture,” for example, on “Diamagnetism”—the ninth of the ten—is just thirty-seven lines long, and takes just two minutes to read aloud!
Magnetism.
The High School Series. (London: T. Murby, 1879.)
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Magnetism . Nature 21, 106 (1879). https://doi.org/10.1038/021106a0
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DOI: https://doi.org/10.1038/021106a0