"By no means!" exclaimed Tom. "It's this way, Mr. Damon. We
went down at as nearly the exact spot where the treasure-ship was
sunk as we could determine by means of calculations. She wasn't
there, nor could we find her by going around in circles. Then it
occurred to me, and to some of the others also, including Ned,
that the ocean currents might have shifted the position of the
craft after she had sunk. There are powerful currents in the
ocean, as you know, the Gulf Stream being one and the Japan
Current another. Now there may be smaller ones in these waters
that would produce a local effect.
"So Ned and I have been dropping bits of cork of different
shapes into the water and watching which way they drifted. Our
conclusion is that the currents here have a decided set toward
the north."
"And what does that indicate?" asked Mr. Damon.
"That we should have begun our search some distance north of
the point where we actually did begin," answered Tom.
"How far north?" the eccentric man wanted to know.
"That's just what we have yet to ascertain," the young inventor
replied.
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