This morning we found ourselves in the region of the great lava-flows, towards noon we reached the Columbia River and then followed up one of its tributaries, the Yakima, to the Cascade range. The Basaltic formation along this stream was of much interest. In many places the columns showed well. We had a few glimpses of the snow-clad Sierras towards the evening, but did not see the range well. We reached Tacoma at 11pm.