Note 23 — Chapter IV · ACROSS THE MEXICAN MOUNTAINS TO ALTAR

Many scientific reports appeared in the public documents of this period. Fremont's "Report of an Expedition to Oregon and California" was printed both in Senate and House documents and in a separate edition in 1845. The Senate documents of the 1st session of the 30th Congress, printed in 1848, contain Emory's "Reconnoissance from Fort Leavenworth to San Diego," Abert's "Examination of New Mexico," Wislizenus's "Memoir of a Tour to Northern Mexico," and Fremont's "Geographical Memoir upon Upper California." Audubon probably had in mind the cylindrical cactus figured by Abert.