62 



THE VOYAGE OF H.M.S. CHALLENGER. 



Forty of these accumulators were found sufficient for sounding purposes in the 

 Challenger, as they were strong enough to withstand the strain of the sinkers on the 



B 



Zaniards 



Iff 



a^ 



tlndia rubber band 



a-\ 



Fig. 15.— The Accumulator. 



lead line without being too strong to give readily with the motion of the ship. In order 

 to combine these forty accumulators so that they should exert a force proportionate, to 



