The Conquest of Canada (Vol. 1 of 2‪)‬

The philosophers of remote antiquity acquired the important knowledge of the earth's spherical form; to their bold genius we are indebted for the outline of the geographical system now universally adopted. With a vigorous conception, but imperfect execution, they traced out the scheme of denoting localities by longitude and latitude: according to their teaching, the imaginary equatorial line, encompassing the earth, was divided into hours and degrees.