Treatise on Terrestrial Magnetism

Chapters in the History of Terrestrial Magnetism

1--The science of Terrestrial Magnetism is based on the fact that a magnet, free to move about its center of gravity, tends to assume a position of relative rest in an approximately definite direction with respect to the geographical meridian and the vertical at the place of observation. That it should do so must be due to the existence of a field of force which is known as the terrestrial magn...

Chapters in the History of Terrestrial Magnetism

l•In Chapter I* it was shown that the compass had been brought into use in northwestern Europe for the purposes of navigation by the year 1187, that its first mention in the literature of that year does not refer to it as being of recent introduction, that the discovery of the directive property of a magnet in the Earth's f•eld must have preceded this application by some considerable time, but ...

A Treatise on Plague

son, m it.c.s.i. London : Swan Sonnenschein & Co., Ld., 1901. Price 7s. Gd. It is somewhat remarkable that, though five years have now passed since the present pandemic of plague first made its appearance at Bombay, no book on the subject lias hitherto appeared based upon Indian experience. Reports written by medical officers, civilians, and even military officers we have had in abundance, but ...

Reflections on Maxwell’s Treatise

Over a period of about twenty years, Maxwell’s determination and unification of the equations of electricity and magnetism evolved from his first paper on the subject in 1855–56, “On Faraday’s Lines of Force,” to the publication of his Treatise on Electricity and Magnetism in 1873. Notwithstanding the many historical accounts and textbooks devoted to Maxwell’s work, I have not been able to find...

A Treatise on Mortgages