Note IV'-36 — Chapter IV · OBSERVATIONS ON NEW SPAIN.[IV'-1]

Sonora then was nearly the same as the present State of that name, but lost a northern strip (the Gadsden Purchase) to our Arizona, and also lost its New Mexican line. For the present boundary between it and the United States, running on lat. 31° 20´ N. to long. 111° W., see note32, p. 645. In Mexico, Sonora is now bounded on the E. by Chihuahua, on the S. by Sinaloa, and on the W. by the Gulf of California, except the short extent to which the Colorado r. separates it from Lower California. Area, 77,550 sq. m.; pop. 140,500; capital, Hermosillo, pop. 7,000; principal seaport, Guaymas, pop. 5,500, situated in lat. 27° 56´ N., long. 110° 36´ W.