by William Gilbert, On the Magnet — Book IV. Chap. 7… (1900)
“ But the inequalities of the maritime parts of the habitable earth, the enormous promontories, the very wide gulfs, the mountainous and more elevated regions, render the variations more unequal, or sudden, or more obscure ”
by William Gilbert, On the Magnet — Book IV. Chap. 7… (1900)
“ As, for example, with us English at London it varies eleven degrees and 1⁄3: in some other places the variation is a little greater, but in no other region is the end of the iron ever moved aside very much more from the meridian. ”
