74 
THE PHYSICAL GEOGRAPHY OF THE SEA. 
far as the calm belt of Capricorn; here it encounters 106) its 
fellow from the north (§ 98) ; they stop, descend, and flow out as 
surface currents 101), the one with which the imagination is 
traveling, to the equatorial calms as the southeast trade-wind ; 
here 104) it ascends, traveling thence to the calm belt of Can- 
cer as an upper current counter to the northeast trades. Here 
100 and 99) it ceases to be an upper current, but, descending 
101), travels on with the southwest passage-winds toward the 
pole. 
Now the course we have imagined an atom of air to take is this 
(Plate I.) : an ascent at P, at the north pole ; an efflux thence as 
an upper current 99) until it meets G (also an upper current) 
over the calms of Cancer. Here (^ 100) there is supposed to be 
a descent, as shown by the arrows along the wavy lines which en- 
velop the circle. This upper current from the pole (^ 97) now 
becomes the northeast trade-wind B (^ 103), on the surface, until 
it meets the southeast trades in the equatorial calms, when it 
ascends and travels as C with the upper current to the calms of 
Capricorn, then as D with the prevailing northwest surface cur- 
rent to the south pole, thence up with the arrow P, and around 
with the hands of a watch, and back, as indicated by the arrows 
along E, F, G, and H. 
107. The Bible frequently makes allusions to the laws of nature, 
their operation and effects. But such allusions are often so wrap- 
ped in the folds of the peculiar and graceful drapery with which 
its language is occasionally clothed, that the meaning, though 
peeping out from its thin covering all the while, yet lies in some 
sense concealed, until the lights and revelations of science are 
thrown upon it ; then it bursts out and strikes us with the more 
force and beauty. 
As our knowledge of Nature and her laws has increased, so has 
our understanding of many passages in the Bible been improved. 
The Bible called the earth " the round world ;" yet for ages it was 
the most damnable heresy for Christian men to say the world is 
round ; and, finally, sailors circumnavigated the globe, proved the 
Bible to be right, and. saved Christian men of science from the 
stake. 
" Canst thou tell the sweet influences of the Pleiades ?" 
Astronomers of the present day, if they have not answered this 
