In a record of the astronomical work of Malaspina's expedition[10] there are some interesting observations on the position and elevation of Mount St. Elias, a translation of which, by Mr. Stein, is here given: "True longitude of Mulgrave west of Cadiz, 133° 24' 12". On the same day, the 30th of June [1792], at the observatory of Mulgrave, at 6h. 30' in the morning, the true altitude of the sun was observed to be 16° 14' 20", and its inclination being 23° 11' 30" and the latitude 59° 34' 20", the true azimuth of the sun from north to east was concluded to be 71° 43' 0". But having measured on the same occasion with the theodolite 110° 33' from the sun's vertical to the vertical of Mount St. Elias, the difference between these two quantities is the astronomic azimuth. Hence, from {66} the observatory of Mulgrave, said mountain bears N. 38° 50' W., a distance of 55.1 miles, deduced by means of good observations from the ends of a sufficient base. A quadrant was used to measure the angle of apparent altitude of the mountain, 2° 38' 6", and allowing for terrestrial refraction, which is one-tenth of the distance of 55.1 miles, the true altitude was found to be 2° 34' 39"; whence its elevation above sea-level was concluded to be 2,793 toises [17,860 feet], and the length of the tangent to the horizon, 152 miles, allowance being made for the increase due to terrestrial refraction.... "Lastly, with the rhumb, or astronomic azimuth, and the distance from the observatory of Mulgrave to Mount St. Elias, it was ascertained that that mountain was 43' 15" to the north and 1° 9' to the west, whence its latitude is found to be 60° 17' 35" and its longitude 134° 33' 10" west of Cadiz." [Footnote 10: Memorias sobre las observaciones astronomicas hechas por les navegantes Españoles en distintos lugares del globe; Por Don Josef Espinosa y Tello. Madrid, en la Imprente real, Año de 1809, 2 vols., large 8°; vol. 1, pp. 57-60.] Taking the longitude of Cadiz as 6° 19' 07" W. (San Sebastian light-house), the longitude of St. Elias from this determination would be 140° 52' 17" W. VANCOUVER, 1794.[11] [Footnote 11: A Voyage of Discovery to the Northern Pacific Ocean and around the World, 1790-'95; new edition, 6 vols., London, 1801. The citations which follow are from vol. 5, pp. 348-407.] The next vessels to visit Yakutat bay after Malaspina's voyage, so far as known, were the _Discovery_ and _Chatham_, under command of Captain George Vancouver. This voyage increased knowledge of the geography of southern Alaska more than any that preceded it, and was also of greater importance than any single expedition of later date to that region. The best maps of southern Alaska published at the present day are based largely on the surveys of Vancouver.