eat 2 
sg aa ie oad 
W. P. Trowbridge on a Submarine Telegraph. 53 
is intended to adapt a line to these inequalities, it is their real 
and not their comparative magnitudes which must be taken into . 
account. 
s) c an epe- 
he catenary will produce a a tension upon the cable, 
] e bottom be very deep, unless 
2d or foreseen. 
. It may therefore be safely asserted, that to avoid risk of break- 
