440 Miscellaneous Intelligence. 
ern halves of the Atlantic passage, the author said was conclusively 
indicative of great ocean currents yielding a mean depression of the 
lowest meridional temperature from 51°-88 to 37°-1, or 14°-8, and pro- 
ducing a mean range of the extreme of temperature on the western side 
more strictly, in the proportion of 29°-7 to 11°83. The author drew 
ature and highest elevation, with ans ch longitude dis- 
tinguished by different shading ; and pointed out how the inspection of 
this as well as of the tabulated results affords striking indications of the 
two great currents, one descending from the Polar, the other ascending 
from the Tropical regions, with their characteristic changes of cold and 
heat. In classifying the results, the author considered the entire bel 
of the Atlantic track of the passages as divided into six divisions of 10° 
of longitude each, and these into meridional stripes of 2° each, omitting 
the first two degrees next the European end, or about 80 miles westward 
of Ireland to 72° W., or about the same distance west o ew York. 
regularity, showing the variations and range to b uch less, while 
throughout the eastern half the widening of the distance, and the irreg- 
ular form of the extreme curves showed the influences of the two cur- 
rents very remarkably. ‘The author then proceeded to draw conclusions, 
showing that sometimes the cold current from the north plunged beneath 
F 2. 
out and forming the main Gulf-stream. Sometimes where they met 
they interlaced in alternating stripes of hot and cold water ; sometimes 
their meeting caused a deflexion,—as, where one branch of the Gulf- 
stream was sent down to the south-east of Europe and north of Africa, 
and another branch sent up past the British Islands to Norway and 
mate, was subject to far less variations of range of temperature than many 
i eneral influ- 
known the temperature to rise no less than 52° in forty-eight hours, 
—having previously descended in a very few days through astill greater 
range; while in these countries the extensive range between mean sum- 
