Dba Be ae, eS ah nag nL Ail it 
164 W. P. Trowbridge on Deep Sea oe 
the velocities will commence to diverge at the maximum point. 
It will be seen from the curves that the velocities dimini 
very rapidly for the first three or four hundred fathoms, then 
more slowly, and in case the specific gravity of the line is nearly 
the same as that of water, the vertical O dw 
and will ahead increase. Both of these cases have import- 
ant bearings, as will be seen here 
The velocities as determined from experiment, show but sre 
liminution below 2000 fathoms; but the number of cases 
G 
t m ver 
ee ‘agseagied of oe the the intervals correctly, below this 
jorgeor 
rift of te boat, & &e., "when three miles of line are out, wo 
foot and a half 
The curves of velocities seem to approach nearer to the hy- 
ag than any other form 
e resistances which cause this diminution of velocity in 
R=S. Dimt-ayh, 
