THE BATHYSPHERE OFI93O 235 



boom, by means of a second winch, nearly down to the 

 clevis, which connects the cable and sphere. The whole 

 boom, was then raised and pulled out over the side, with the 

 top of the tank almost touching the third sheave. From this 

 position the sphere could be lowered upon a single whip. 



Perhaps the greatest trouble was caused by the twisting 

 of the rubber hose about the steel cable. Most of this was 

 apparently due to the failure to stretch the latter by letting 

 it all out without the rest of the apparatus and then to re- 

 wind it under tension on the reel. When twisting was bad 

 we would tie up the loops every two hundred feet in a loose 

 coil, through the center of which the steel cable continued 

 to operate. Eventually, however, we succeeded in getting 

 out as much as two thousand feet without twisting. 



Besides taking observations at great depths in the open 

 ocean, we tried towing the tank along under the vessel, 

 endeavoring to keep the bottom in sight and not to run 

 into any of the ledges which rise up quite suddenly in these 

 waters. In this work we nailed a wooden rudder on each 

 skid behind, by which the windows were kept always to 

 the front in the direction of motion. 



I donated the affair to the New York Zoological Society 

 in the autumn of 1930. 



