for the Promotion of Science. 399 
the south) it gradually ae its decided character, and at the limit all 
trace of a fixed directi isappears, the current»at any place being 
paced entirely by ina influences, This he illustrated by a sepa- 
rate diagram of the winds y Augusta,Georgia. After passing this 
imit on the south, he showed that a current from the opposite direction 
sets in, which, as we sober radually assumed a more decided char- 
acter till we come fully within the limits of the trade winds. He allu- 
d, in passing, to a peculiarity in the winds west of the Mississippi, 
tween ° - t. new and lat. 40°, as explaining the tracks of storms | in 
those-re 
North of Cisaia pa pe Oe bn there are. ee tions ‘that the 
strong ‘current that co s down from the nort Pe arly: ir regions 
veers toward the west; oho esjabljahing a third eyes, ‘which breaks 
up about at latitude. 60°. . The alent at various pan in 
hac wad westerly systems o 
He next spoke of the relative Pres of the different winds, showing 
how far the general results are modified from ‘this cause. 
After remarking that he was-compe elled for want of time to a met 
eral matters embraced in the report, he “closed with an 
thanks to the numerous friends who had aided him in ee ibe 
essary data, and whom he mentioned by name, with the kind of aid 
received from each, 
_ M.F '. Maury, U.S.N., on the Winds and, Currents of the Ocean.— 
y reminded the Association, that in'1844, they appointed a com- 
mittee resent to the Secretary of the Navy, the importance of 
the s which our armed cruisers might render to the cause of 
ie : 
ason was a ma 
of sco aind and liberal views; he received the representations of 
> as a friend of science and a statesman shou 
to the impulse thus given, that Lt. Maury had been 
cane e. sony out a plan which he had long entertained, of construct- 
Prats Series of charts which should give to each navigator the benefit 
of the combined experience of all who had gone before him, as to the 
winds and currents in every part of the ocean. Charts pi this plan, 
of the North Atlantic, were paenios before the epee 
hey are so constructed as to shew at a glance the sammie winds, 
currents, temperatures, &c. fot every month in all parts of * ocean. 
The characters or symbols for the winds are so contrived, th at they 
shew at once both the direction and strength of the wind. a 
To obtain the results exhibited before the Association, involved im- 
mense labor: many Gieew old log-books had been overhauled, and — 
the records of each as to winds, temperature of the sea, variation of 
