34 On the Distribution of Temperature in the Gulf Stream. 
TABLE No. I, 
Showing the probable uncertainty in determination of the maximum and minimum 
points. 
Uncertainty, in miles. 
sm eg vor first ‘ oo fest Becond | Second | Third | Third | Fourth 
Sandy Hook,........| a Se 7 fOO.>/ 394 1 TSA be pe “s 
Cape May, . «su sanvas “82 | 1°25. | 264 | 157 | ...-- 403 | 487 
Cape Henry, (3 years),| ‘84 “61 55 | 170 | 1:06 94 | 442 
Cape Hatteras, (2 y’'rs) ....- 67T | 636 | 981 5°69 | 623 | ...e 
ape Hear... cs cece] cower PG Se Oe 2°98 8:49 | 13°37 
Charleston, «<.5:6:i6:ss+ 1°25 157 72 2-09 2°40 8 ves 
SE Bin Go cs eens ts 00 74 1:27 5 eet Se hg eA 
St. Augustine,....... "52 44 2 dee Goh es eras 
ape Canaveral,...... 95 | 169 Bs bees was Oa Pee ees a 
Final value, ..... ‘83 | 249 | 249 | 400 | 401 | 371 | 845 
3. Connection of the figure of the bottom of the sea with the 
distribution of temperature. 
The discovery that soundings could be carried nearly across 
the Charleston section of the Galf Stream, and that after losing 
them on this section for a short distance they were reached be- 
yond the axis of the stream, was communicated to the Associa- 
tion at the Cleveland meeting, as resulting from the observations 
of Lieuts. J.N. Maffitt and T. A. Craven, U. S. N., assistants in 
the Coast Survey. The connection between the figure of the 
poe and 4 division of the stream, which the observations of 
tablished as applicable to the sections south of 
ese 0 
Cuan | is feeey in diagram No. 9, in which the curves of 
equal temperature, the depths corresponding to them, and the fig- 
ure of the bottom, are given. In the diagram the distances from 
the shore are marked in nautical miles on the top, as also the posi- 
tions at which the temperatures were explored; and the depths 
in fathoms are stated on the left hand-side. Each curve is marked 
with the temperature (by Fahrenheit’s scale) which it indicates, 
and the curves are drawn for every five degrees from 57° to 
Fahrenheit. 
The bottom of the sea slopes gradually on this section for some 
fifty miles, reaching a depth of about twenty fathoms; then more 
rapidly to about 65 miles, and the depth of one hundred fathoms; 
and suddenly falling off to a depth greater than six hundred fath- 
oms—at about one hundred miles from the shore, where the depth 
is three hundred fathoms, a ridge, with a very steep slope on the 
in shore side, and a little less to seaward, occurring fifteen hun- 
dred feet above the hollow to seaward of it, and distant about 
twelve miles from it. A second rise of five hundred feet, on a 
base of twelve miles, is followed by a depression of three hun- 
dred feet on a base of fifteen miles, and then by a gentle slope 
upward. 
