th the line E, it is easy to determine just where, or how
far the sun is to the north or to the south, and if you did not, for
instance, know the time of the year, a man could by such a measurement,
tell, by the angle thus formed, the exact date."
"I understand that now," remarked George. "The sailor, in getting the
angle, simply measures that, and if he knows where the sun is on that
day he will then have two angles, one that he knows beforehand, and the
other that he finds out by looking at the sun."
"That is correct. The Nautical Chart gives all that information, so that
it saves a large amount of work in making the calculations."
"That gives the way to determine positions north and south. But how
about east and west?"
"In the same manner exactly so far as the angle measurements are
concerned, but in this case, instead of taking the time, in days or in
months, as in reckoning north and south, we must take time in minutes,
and to do that the entire globe is laid off in minutes and degrees,
which the nautical tables give, and the mariner knows when he obtains a
certain angle just how far east or west he is located by the chart."
"But if he has no chart?"
"Then he must figure out the position for himself, which he can do if he
has what is called Greenwich, or standard time, and has, also the
correct time of the day where his ship is."
Land was beyond; there was no question of that. It rose out of the water
higher than the island they had just left, which the boys had named
_Venture_ Island.
The Chief knew nothing of the land before them. He had told John that
years before he learned that there was a land where there were many bad
people, who killed and ate each other, but he did not know the exact
direction.
The vessel was sailed along the coast, and the field glasses were used
to scan the land. It had the appearance of the other islands which they
now knew. Vegetation was magnificent, and growing everywhere, but there
was not the sign of a habitation anywhere.
After an hour's sail they rounded a point, and beyond was the first
cove, or indentation along the coast. To that John directed the course
of the vessel, and they ran in very close, since he knew from the abrupt
sloping beach that it must be a deep bay.
The men could scarcely man the boat quickly enough. A dozen of them,
together with John, Muro and Uraso, took the first boat, while a second
boat was filled with the warriors who also were
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