13 
The data and specimens collected are expected to be used as a basis for a 
later faunal report on the mammals of the International Boundary region 
of southern British Columbia from the strait of Georgia to the Alberta 
boundary. 
This project, which is hoped to be a definite contribution to an intri- 
cate and complicated faunal area of Canada that has been comparatively 
little studied in a systematic way, was begun in the spring of 1927 and 
carried on by C. H. Young, senior collector-preparator on the Museum 
staff, assisted by H. M. Laing, of Comox, B.C. They made extensive 
collections in the low, humid Pacific coast belt and continued over the 
Hope-Princeton summit to the eastern slope of Cascade mountains. In 
1928 Mr. Laing continued the work, beginning at Sterling creek (elevation 
1,700 feet) on the east slope of Cascade mountains near Hedley,B.C., 
carrying the survey as far east as Westb ridge in Kettle River valley (eleva- 
tion 2,075 feet), going back later in the autumn for investigations on 
Juniper mountain, south fork of Ashnola creek (elevation 4,500 feet). 
In 1929, Mr. Laing began work on May 4 in the arid belt of southern 
Okanagan valley, his Camp 1 being on the west side of Osoyoos lake (eleva- 
tion 913 feet), one-fourth mile north of the International Boundary. This 
area contains some newly opened irrigated land, but on the sagebrush 
lands below the first benches several square miles were in a raw state, 
changed from its native condition only by heavy pasturing by domestic 
stock. Though the region was not particularly suited to large numbers of 
species, good series of dry belt forms were collected, including pocket 
mice (Perognathus ), sagebrush white-footed mice, western white-tailed 
jackrabbits, packrats, etc. 
Camp 2 was made on Boundary creek at Midway, B.C., in the valley 
of Kettle river (elevation 1,800 feet), from May 27 to June 15. The valley 
of Kettle river at Midway is flat, sandy, and dry, with a timbered range 
of hills rising abruptly on the southerly side. Elsewhere the valleys of 
Kettle river and Boundary creek were open, rather barren, and timberless 
— all typical transition zone; first class stock range, with many farms 
abandoned on account of former drouth. Good series of long and short- 
tailed voles were taken and white-footed mice, jumping mice, long-tailed 
and water shrew, and one pocket-mouse. 
Camp 3 was made near Rossland, B.C., on Alfred Morgan's ranch, 
near Rossland reservoir (elevation 4,000 feet), from June 15 to August 6. 
R. M. Anderson left Ottawa on June 27 and reached Rossland on July 2, 
remaining with the party until the close of the season, returning to Ottawa 
on October 18. 
The country is well timbered in the vicinity of Rossland, with western 
coastal types at this elevation, western cedar, western hemlock, western 
larch, Douglas fir, western white pine, etc. Much of the country eastward 
showed ravages of fire and smelter gas, until in the vicinity of Trail at 
about 5 miles distance and at 2,000 feet lower elevation in the valley of 
Columbia river a condition of aridity prevailed. Trapping was carried on 
mainly from camp at reservoir: down watersheds running northward; 
also about the base of Red mountain and its eastern slopes; and the base 
of Old Glory mountain. The last included only the trail from 5,800 feet, 
12931 — 2 
