In Eastern Seas | Page 9

after he came on board he called Oliver Farwell to help him arrange his cabin; but as Oliver had other duties to attend to, I offered my services.
"Yes, my lad, I shall be very much obliged to you," said the gentleman. "I should have liked to have got these things on board before the ship left the docks; but there was no time for that; and it is important that they should be secured before we get into a tumbling sea, from which they may receive damage."
I observed that Mr Nicholas Hooker was painted on all the cases, and of course concluded that such was the name of the gentleman. He had a number of screws with which he fastened some of the articles to the bulkheads, and lashed others in a seamanlike fashion. There were charts and telescopes; indeed, from the various articles he had with him, I fancied that perhaps the gentleman was a naval officer. Still, as I did not see R.N. at the end of his name, I thought again that he could not be so.
At length Mr Hooker, having unpacked his books, various instruments, and other articles, begged that the cases might be stowed away below. His directions were promptly obeyed, and having surveyed his cabin, he seemed satisfied that all was in perfect order.
"Now, young gentleman," he said, with a pleasant smile which won my confidence, "I daresay you would like to know what all these things are for. Some are for taking the latitude and longitude, ascertaining the exact position of places on the earth's surface. Others are for measuring the height of mountains, some the temperature of the air and water, and so on. Then I have cases for creatures which move in the water or fly in the air, which walk or crawl on the earth or burrow beneath it; and I have the means of shooting them or trapping them. Those I can, I hope to preserve alive; and if not, to be able to exhibit to my scientific friends, when I return home, the forms of some perfect, the skins of others, and the skeletons of others. And now, having told you thus much, I must leave you to guess what I profess myself to be. One thing I can tell you, I know very, very little compared to what there is to be known. I hope to gain more knowledge but I am very well aware that, gain all I can, I can but add a very small portion to what is already known, and a still smaller compared to what is to be ascertained. Here comes the captain. We are old friends, and that induced me to select this ship for my voyage. Are you his son?"
"No, sir," I answered; "but he is a very kind friend of mine; and were it not for him, I know not what would have become of me and my sister."
The Bussorah Merchant had a fine passage down Channel, and taking her departure from the Land's End, stood across the Bay of Biscay. Four days afterwards the captain told us that we were in the latitude of Cape Finisterre, but no land was to be seen. Another eight days, with the wind abeam, carried us into the neighbourhood of the island of Madeira.
"Would not it be as well to have a look at it, sir," I said, "and then we shall better know where we are."
The captain smiled. "That is not at all necessary," he answered. "By the observations we are able to take with the perfect instruments we possess, we are able at all times to ascertain our exact position on the ocean; and we might thus sail round either Cape Horn or the Cape of Good Hope to New South Wales without once sighting land till we were about to enter Port Jackson."
"It is very wonderful," I said. "What puzzles me is how you can find the longitude. I know you get the latitude by seeing how high the sun is above the horizon at noon, and then with the aid of the nautical almanac you can easily work out the calculation."
"With the aid of the chronometer we can as easily ascertain the longitude, though the calculation is a little longer," answered Captain Davenport. "I can explain it to you more easily. The chronometer shows us the exact time at Greenwich. We know by our nautical almanac that, at a certain hour on a certain day, the sun will have attained at Greenwich a certain altitude. When on that day and that hour we find that the sun is so many minutes behind hand in attaining that altitude, we know we must be a certain distance further to the west, as, the world turning from west to east, the