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in the lake north of the laboratory. At 2 p.m. lectured at laboratory on birds, including a general account of Colorado birds. At 4:30 Robbins and I went down valley a short distance. At 5:30 there were 15 night hawks hovering over the meadow. At 6 p.m. saw none. Barn swallows abundant, violet green less so. At 7 p.m. I lectured at the laboratory on "Glaciers of Colorado, existing and extinct".
Tolland, Colo., July 28, 1909
Bright, fresh, breezy morning. Started for Jenny Lake at 10:15. Robbins and I and Mr. And Mrs. Pennoc and Miss Wollman. Came down gulch on foot. In pond at 10,500 ft collected Pisidia and water beetles. On way back
