Scope and Contents This expedition, the first official one of the Academy, included J. E. Ives, Roberts LeBoutillier, Witmer Stone and Frank C. Baker in the party. Arriving on the 22nd of February, they covered the territory of the northwestern part of Yucatan and the Mexican highlands in the vicinity of Orizaba. Natural history specimens were gathered and photographic records of the ecological conditions and the contours of the country through which they travelled, were taken. The short time spent in the...