Unique was my experience in nautical astronomy from the deck of the Spray—so much so that I feel justified in briefly telling it here. The first set of sights, just spoken of, put her many hundred miles west of my reckoning by account. I knew that this could not be correct. In about an hour's time I took another set of observations with the utmost care; the mean result of these was about the same as that of the first set. I asked myself why, with my boasted self-dependence, I had not done at least better than this. Then I went in search of a discrepancy in the tables, and I found it. In the tables I found that the column of figures from which I had got an important logarithm was in error. It was a matter I could prove beyond a doubt, and it made the difference as already stated. The tables being corrected, I sailed on with self-reliance unshaken, and with my tin clock fast asleep. The result of these observations naturally tickled my vanity, for I knew that it was something to stand on a great ship's deck and with two assistants take lunar observations approximately near the truth. As one of the poorest of American sailors, I was proud of the little achievement alone on the sloop, even by chance though it may have been.
I was en rapport now with my surroundings, and was carried on a vast stream where I felt the buoyancy of His hand who made all the worlds. I realized the mathematical truth of their motions, so well known that astronomers compile tables of their positions through the years and the days, and the minutes of a day, with such precision that one coming along over the sea even five years later may, by their aid, find the standard time of any given meridian on the earth.
To find local time is a simpler matter. The difference between local and standard time is longitude expressed in time—four minutes, we all know, representing one degree. This, briefly, is the principle on which longitude is found independent of chronometers. The work of the lunarian, though seldom practised in these days of chronometers, is beautifully edifying, and there is nothing in the realm of navigation that lifts one's heart up more in adoration.
CHAPTER XII
Seventy-two days without a port—Whales and birds—A peep into the Spray's galley—Flying-fish for breakfast—A welcome at Apia—A visit from Mrs. Robert Louis Stevenson—At Vailima—Samoan hospitality—Arrested for fast riding—An amusing merry-go-round—Teachers and pupils of Papauta College—At the mercy of sea-nymphs.
To be alone forty-three days would seem a long time, but in reality, even here, winged moments flew lightly by, and instead of my hauling in for Nukahiva, which I could have made as well as not, I kept on for Samoa, where I wished to make my next landing. This occupied twenty-nine days more, making seventy-two days in all. I was not distressed in any way during that time. There was no end of companionship; the very coral reefs kept me company, or gave me no time to feel lonely, which is the same thing, and there were many of them now in my course to Samoa.
First among the incidents of the voyage from Juan Fernandez to Samoa (which were not many) was a narrow escape from collision with a great whale that was absent-mindedly plowing the ocean at night while I was below. The noise from his startled snort and the commotion he made in the sea, as he turned to clear my vessel, brought me on deck in time to catch a wetting from the water he threw up with his flukes. The monster was apparently frightened. He headed quickly for the east; I kept on going west. Soon another whale passed, evidently a companion, following in its wake. I saw no more on this part of the voyage, nor did I wish to.
Hungry sharks came about the vessel often when she neared islands or coral reefs. I own to a satisfaction in shooting them as one would a tiger. Sharks, after all, are the tigers of the sea. Nothing is more dreadful to the mind of a sailor, I think, than a possible encounter with a hungry shark.