I' HAT. V.] 



DEEP-SEA S0UND1XG. 



2L7 



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 sounding- 

 line ends in a loop passing 

 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 stead}^ 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 f, and the arm 

 and chain correspond in length 

 to the rod n. Two teeth e e 

 project from d, and on these are 

 hung a heavv weight. The 



Fig. 41. 



-The ' Fitzgerald ' Soundinj 

 Machine. 



