Note 152 — Chapter XXII
Reading edition
At St. Helena, the north end of the needle reaches its eastern extreme in May, June, July, and August, and nearly at the same hours it reaches its western extreme in November, December, January, and February. The passage from one to the other takes place at, or soon after, the equinoxes in March and April, September and October.—Colonel Sabine’s Notes to “Kosmos.”