Note C — COLUMBUS.
Reading edition
“On the 13th September, in the evening, being about two hundred leagues from the island of Ferro, he, for the first time, noticed the variation of the needle, a phenomenon which had never before been remarked. Struck with the circumstance, he observed it attentively for three days, and found that the variation increased as he advanced. It soon attracted the attention of the pilots, and filled them with consternation. It seemed as if the very laws of nature were changing as they advanced, and that they were entering another world subject to unknown influences.”—Ibid.