CHAP. V.] 



DEEP-SEA SOUNDING. 



217 



sounding- 

 passing 



ness, but I will say this for the 

 'Fitzgerald' sounding apparatus 

 that I never knew it fail ; and 

 we were obliged, unfortunately 

 for ourselves, to try it fre- 

 quently in very bad weather 

 and under most unfavourable 

 circumstances. The 

 line ends in a loop 

 through an eye in the centre of 

 a bar of iron r. The bar ter- 

 minates at one end in a claw 

 and at the other in a second 

 eye, to which a chain is at- 

 tached. A scoop A, with a 

 sharp, spade-like lip, is fixed to 

 a long and rather heavy iron 

 rod D, with an expanded rudder- 

 shaped end to steady it in pass- 

 ing quickly through the water, 

 and beneath this an eye, which 

 fits the claw of the bar F. A 

 door B fits the scoop to which 

 it is hinged, and it is also 

 hinged to the arm c, which, 

 when held in a vertical posi- 

 tion, keeps it open. The arm c 

 is attached by the chain to the 

 eye in the bar E, and the arm 

 and chain correspond in length 

 to the rod D. Two teeth EE 

 project from D, and on these are 

 hung a heavy weight. The 



FIG. 41. The ' Fitzgerald' Sounding 

 Machine. 



