Thus Howland took out with him parts of both copies which were destroyed by the Shewits when they killed the men.

After Howland's departure, the Major ran in the course to the mouth of the Virgin.
Professor Thompson was confident that our plat of the course, which is the basis of all maps to-day, is accurate from the Union Pacific Railway in Wyoming to Catastrophe Rapid, for though we left the river at the Kanab Canyon, we were able by our previous and subsequent work on land to verify the data of the first party and to fill in the blanks, but he felt ready to accept corrections below Catastrophe Rapid to the Virgin.
For a list of the canyons, height of walls, etc., I must refer to the appendix in my previous volume.

While two names cover the canyon from the Paria to the Grand Wash, the gorge is practically one with a total length of 283 miles.

I have not tried to give geological data for these are easily obtainable in the reports of Powell, Dutton, Gilbert, Walcott, and others, and I lacked space to introduce them properly.

In fact I have endeavored to avoid a mere perfunctory record, full of data well stated elsewhere.