78 & rounded somewhat like moraine boulders, fine dust is also produced like that of dried moraine mud. The dust of High Sierra gullies is produced in this way The channels of snow-streams, of rock streams, & of ice streams, all are different yet not always readily distinguishable The outbounding stones of avalanches frequently cut off trees leaving stumps 100 feet high, the tops falling upward [sketch of tree with stem broken by large rock] Pohono [Avalanche] Earthquake talus W. [West] side alt [altitude] 4330 Bottom of fall 4230 Valley 4000 Difference in alt. [altitude] between the head of the old Mirror Lake & the junction of Tenaya Creek with the river 130 ft [feet] Pohono The Bridal Veil shoots free from the upper edge of the cliff...