APPENDIX No. 1. 



ERRATUM. 



Pago 27S, line 3, lof " 1,200 Hi-. ri)]i]n'r to tlie iiiiK; in tliu new 

 Anglo-American Cal lie," read " 050 Uis." The nnniliei- <it' word:^ 

 iier minute transmissible over this ealjle has yet to be determined 

 liy actual exiK-rimeiit. While some anticiiiate 120 words on the 

 duplex principle, oi' 00 each way, the less sanguine reckon on 

 90 ])er minute, duplex, or 45 each way ]ier minute. The latter 

 calcvdation is more likely to jimve cdrrect. The cost of the imw 

 caVile is about half a million of dollars. 



STOCK EXt'HANGKfS. 



Perhaps tie most wonderful feat yet jierfornied on the A^glo- 

 American Cables is the transmission of intelligence between the 

 Stock Exchanges of New York and Loudon while business i;-; 

 proceeding. A special cable is appropriated to tlieii- use 'luring 

 tive hours each day. The prices of stock are flashed l.iotli ways, 

 so that a broker in New York can liuy stock in London a~ jvadily 

 as if he were one of the shouting crowd in the Exchange, and 

 vice versa. Answers are received in from two to four miinitcs, 

 .so that instruction.s to lu-okers on either side are tr.insmitted in 

 this brief interval, while the auction is jiroceeding, and fortune:j 

 won or lost in a few seccjuds. Xiue-teiiths of this exchange busi- 

 ness is transacted over the Anglo-American caltles, — a fact which 

 sutticiently atte.sts their superioi- accura(.'y and speed. 

 THE IMPROVED GRAVNEL. 



A grapnel is now in u.se on board the Cable Ship Miiiui, Capt. 

 Trott, for picking up cables re<|uiring repairs, which would seem 

 to be endowed with almo.-t human intelligence. The monieiit the 



