Fig. 21. Samples of pumice fall. Samples numbered 252 to 258 collected on Dalles-California highway at the following distances from Crater Lake: 24, 25, 28.5, 30.5, 37, 45, and 60 miles. Wikiup sample, 60 miles NNE.; Lakeview highway sample, 48 miles NE. In samples from Dalles-California highway, content of lithic fragments omitted, but usually less than 1 per cent.

Fig. 25. Histograms of pumice deposits. All but the first from pumice flows.