[23] So called on account of the form of grooving adopted for taking the under side of the table.
[24] Submarine Telegraphs.
[25] It is partly for this reason that so full an account is given here.
[26] In those days all such instruments were spoken of as galvanometers, no matter for what purpose they were employed. Moreover, this instrument was also used sometimes for testing. That which goes by the name of the marine galvanometer in the present day was not invented by Lord Kelvin till some years later.
[27] This splice-frame was an ingenious arrangement for neutralizing the untwisting tendency of two opposite lays when spliced together, but is never required in present-day practise.
[28] This, of course, did not in any way come as a surprise, for the length of cable employed for these experiments had long since been condemned as imperfect.
[29] And so it is sometimes with telegraph-ships—as regards the dead weight of cable—even in the present day, when compared with the risks run by ordinary seagoing vessels.
[30] When these part to any extent a ship is always considered in a dangerous condition.
[31] By subsequent tests it was clear that at any rate the cable remaining on board was perfect. But after com paring notes with the Niagara, a strong belief was held that the cable probably parted at the bottom.
[32] This was from the last turn in the coil, and subsequently it was discovered that owing to the disturbance in the flooring of the tank during the storm, the cable had been damaged here.