a 
Miscellaneous Intelligence. * 287 
progress of the ship, from some unexplained cause, signals failed to pass 
tween them, viz: at 7} p.m. July 29, for an hour, and August 2, from 
12h 38" a.m, to 5.40 a. m.- But during all the remainder of the time 
Suggested elsewhere that the Boston fire-bells, which are now rung by 
electricity, should be placed in communication with London and rung by 
€ current from the company’s office there.* 
bsence of any accurate scientific report of the details of the 
. The figure annexed is a correct view of the exterior 
: d cross section of the cable. The 
electrical conductor is formed of seven No. 
> 
B 
. 
Copper wires, the centre wire being 
Straight, while its six surrounding wires form 
a spi it. 
oo y | 
es ae insure insulation. Finally, seventeen strands of iron wire, No. 20, 
com each of seven separate wires, 
ul also be interesting to see on reco! 
Manufacture snd gevenetas of the cable, with full plates, and a statement 
of the chief causes of delay and embarrassment, and their cure. But the 
* Boston Transcript, August 13, 1858. 
