et to the destruction of masses of men, would cer- 
y be put in requisition, as total annihilation eg antagonists 
is “4 aim of Chinese heroes: ‘no quarter”'is their war cry. 
Ningpo, March 2, 1857. 
Art, XXVIII.—WNote on the Currents of the Oceans; by JAMES 
D. Dana. 
[Communicated to the American Association at Baltimore.] 
In the annexed figure, if A A’ represent a large elliptical basin 
of water warmed on the side towards HQ and ‘kept cold on the 
Opposite, the isothermal diameter (or line of mean heat in th e 
water’s surface) will have the direc- 
tion AA’, But if the water were 
put in equable circulation about the 
centre, in the direction of A BA’ B, 
the isothermal diameter, instead of ; 
having the direction AA would run 
seiguely across, like nn’, since the 
warm Waters would be he old ta in ae 
E Qa 
the ede (friction here being set aside, as it would have li 
effect if the basin ‘hundreds or thousands of miles in ex 
the effect of the colder side were aug- 
line as ArrrrA’ — wall: 
i sothermal 
i acruek by the cold current 
