HARDWJCKE'S SCIENCE-GOSSIP. 



13 



Gloucester and Sharpness Canal, at the latter place, 

 and each less than 300 feet in length. 



Of Government cables the greatest number is 

 owned by Norway with two hundred and thirty- 

 six, averaging however less than a mile each in 

 length. 



eighty-nine cables; and Germany third with 1579 

 miles, and forty-three cables. 



Britain being fourth with ninety miles less. 



The oldest cable still in use is the one that was 

 first laid, that namely from Dover to Calais. It 

 dates from 185 1. 



SCALE 



Fig. 4. — Map showing the Main Cables from Europe, and their connections with Canada and the United States. References to 

 places— A, Heart's Content ; B, Placentia ; C, St. Pierre Miquelon ; D, North Sydney, Cape Breton Island ; E, Louisbourg : 

 F, Canso, Nova Scotia; G, Halifax; H. Bird Rock; I, Madeline Isles; J, Anticosti ; K, Charlotte Town, Prince Edwards 

 Isle ; LLL, Banks of Newfoundland. 



The greatest mileage is owned by the Government 

 of France with 3269 miles of the total length of fifty- 

 one cables. 



The next being British India with 1714 miles, and 



The two next oldest cables in use being those 

 respectively from Ramsgate to Ostend ; and St. 

 Petersburg to Cronstadt, and both laid down in 



1853. 



