Show DEEP SEA WATER at 0 our h d fathom n it pres pr coloon sure I 1 a ton to the be square in when marine life began bega a to command notice the question ot of the depth to which life could extend divided soen scion elfio thought into v m airing arring camps about 1840 it wae mae generally believed that the bathymetrical a limit wa was about fath clas and some strange ideal ideas were car rent as to the physical condition of wa ter when auder a pressure such as a depth of two miles would produce it was thought that skeletons of drowned men or evin evi n heavy cannon and the wedges of gol I 1 that popular ini agica tion places in the gen sea floated at certain levels beneath which is water BO so coin com as to be impenetrable in la fact water is almoite sible and the th weight of a cubic inch of it at the depth of a mile la is very little more than at the surface but it was assumed that oo 00 liv by log ing being could a pressure which at 1 fathoms is about a ton to the square inch NN V e ourselves live under s a pre pressure of about 15 pounds per inch and are un no aware of it indeed we sometimes come times waken on a morning when the be barome ono ter has risen fay say half an inch in h during the night and consequently find our selves sustaining an increased pre pressure ot of several tons not only without suffer buffer ing but with a positive feeling of buoy ancy and good spirits on the other band hand if the tremendous pressure under which we live I 1 be relieved as by a sur our cup severe injury may follow aeronauts Aero suffer from this cause and marine animals dredged from great depth often reach the surface in a most lamentable condition with eyes protrude fag ing and viscera distended dr r 0 M blackford tr in north american |