Boromaw 1952. Journal. 37 Sept. 3 Rio Arriba 6 mi. S. Truchas, 10,000 ft., Taos Co., New Mexico. Trewi and Peromyscus monaculatus beneath Pinus; also one ad. and one im. of each. From our campsite we can view Truchas Peak, approx. 13,815 ft. high, probably the highest point in New Mexico. The peak is above tree line, but only a relatively narrow bond. Along the roadway leading to our campsite, which follows Rio Quemado for all of the way, we observed Alder, Willows, Aspen, Yellow Pine, Douglas Fir, & Blue Spruce. The yellow pine disappears on the valley or canyon walls at about 9800 ft. At our campsite, the Douglas Fir, & aspen are the dominant tree species. Some 5-needled Western White Pine were seen. Where areas have been disturbed through clearing or burning, there is Aspen. There are beautiful mature groves, with trees over 50 ft. tall. (See photo 3/4). Along the streams, aspen & Alder are present. The Alder is a moderately sized tree, up to 25 ft. tall & 9 inches in diameter (the larger representative seen). By several times we could feel the effects of cold air drainage into our valley camp. By 8:15 P.M. temp. was 47° F. At sundown, saw several small bats flying over camp. O.T. Person shot one - this Mupus volous. [Insert - I shot one Saurus aberti in yellow pine forest. I mile S. Borrego, Co., New Mexico J. Heard & saw one Tenager in aspen tree.