Wilkinson, Henry Daniel, 1857- · London : "The Electrician" Printing and Pub. Co. Limited ; New York : D. Van Nostrand Co. · leaf 37
SURVEYING THE ROUTE. 7 freely through a hole in the shot, and the end A screws into a gunmetal casting which contains a butterfly valve at C. The shot is "generally oval in shape, the longer diameter being vertical. The sling and detaching gear at F are the same as already ‘described and… … the bottom until it reaches stiff ground, and the wad of this at its lower end invariably secures the soft mud or ooze above it which otherwise would be washed out before reaching the sur- face. Samples are often Gin. to Jin. in length, and sometimes show distinct strata. The mud is pushed straight…
Cables, Submarine
Internet Archive · MBLWHOI Library · Public domain (published before 1931). Free to use for anything.
