Travel guide for the various cultural and historical sites along the Texas Hill Country Trail in Central Texas.

Abstract: "Gravitational observations were made of the pre-Cambrian Coal Creek serpentine mass in Blanco and Gillespie Counties, Texas, the geology of which had been mapped previously. The observed gravitational anomalies indicate roughly the depth of the serpentine mass below which it may possibly grade into its parent peridotitic rock. Probable correlation between the gravitational map and the other geologic features of the area is indicated" (p. 151).

Patent for clamps for spirit levels that allow a spirit level to be attached directly to a straight edge so that one person could safely use both the straight edge and the spirit level simultaneously. Additionally, the clamp production is simple so it can be produced at a low cost.

Patent for a pump operating mechanism, which is run by horses going in a circle around the device to power the pump.

Patent for a tire bolt wrench. Illustration included.

Patent for "a new arrangement of support for the stem of a throttle-valve, and has for its object to facilitate the lubricating of the screw and cause the parts to be firmly held in place." (Lines 19-23) Includes instructions and illustrations.