While researching the development of marine salvage in the New Jersey-Massachusetts region, I came across a series of fantastic Scientific American articles about “submarine engineers,” divers and wrecking (what we now call salvage). They are priceless bits of late-nineteenth century Americana. The text below accompanied the image above in the article “Submarine Diving,” which appeared in periodical’s January 25, 1873 edition.
Loaded with a weight of over one hundred and forty pounds, under a pressure of nine atmospheres, beneath a hundred feet of fluid, two minutes’ existence in which is impossible, and in depths where no ray of light has ever penetrated, man cannot only live but work. Not only can he labor but, remaining submerged for hours with impunity, performs operations which require skill; placing the explosives which are to tear up sunken reefs, leveling unequal bottoms or plunging into the holds of wrecks, with marvelous intrepidity he can force the sea to yield its buried treasures.