Cruise of the 'Alert'. R. W. CoppingerЧитать онлайн книгу.
of the eastern passages leading to this group, with an investigation of the doubtful dangers reported in the vicinity of the great shipping tracts. Finally, on completing the above, and arriving at Australia, we were to spend a year and a half, or thereabouts, in surveying the line of reefs which fringe its whole western seaboard, the ill-defined position of which is a serious obstacle to the now extensive trade between Western Australia and the Dutch islands of the Malay Archipelago.
The latter part of the orders was subsequently changed, inasmuch as we were directed to omit the survey of the western shores of Australia, and were ordered instead, on completing the North Australian work, to proceed to Singapore, in the Straits of Malacca, to refit. Thence we were to return home by the Cape of Good Hope, stopping on our way at the Seychelles, Amirante Islands, and Mozambique, in order to fix astronomically the position of the Amirante Group, and, as opportunities occurred, to take a line of soundings off the east coast of Africa.
The vessel selected for this special service was the Alert, a man-of-war sloop of 751 tons measurement and 60 horse-power nominal; and the command of the expedition was given to Capt. Sir George Nares, K.C.B. By a happy coincidence the same stout craft which had already done such good service in the Arctic Expedition of 1875–6, and which bears the honour of having attained the highest northern latitude, was selected as the ship in which Sir George Nares was now about to proceed on a voyage of exploration in high southern latitudes. She was officially commissioned on the 20th of August, with a complement of 120 officers and men, her equipments including apparatus for conducting deep sea sounding and dredging operations, and a miscellaneous collection of instruments not usually supplied to H.M.'s ships.
It being the wish of the enterprising hydrographer of the navy—Captain, now Sir Frederick Evans, K.C.B.—that the opportunities which this expedition would afford of making a valuable natural history collection in regions little known to science should not be thrown away, and Sir George Nares warmly seconding him in this wish, the Admiralty determined on appointing as surgeon an officer who, in addition to his duties as medical officer of the ship, would be inclined to devote his spare time to the cause of natural science. Sir George Nares, knowing my fondness for natural history, with characteristic kindness gave my application his support, and I had therefore the good fortune to be appointed as medical officer of the Alert, on the understanding that (so far as my medical duties permitted) I would not lose sight of the advantages which would accrue to science from a collection of natural-history objects illustrative of the fauna and flora of the countries visited in the course of the voyage.
During the four years over which my narrative extends, many changes took place in the personnel of the expedition. Scarcely a year had elapsed from the date of our departure from England, when we had to regret the loss of Sir George Nares, who left us at Valparaiso, and returned to England by mail-steamer, in order to enter upon his duties as Director of the Marine Department of the Board of Trade. We were fortunate, however, in having as his successor Captain John Maclear—formerly of the Challenger exploring expedition—to whom I take this opportunity of expressing my thanks for the unvarying kindness which I have always experienced at his hands, as well as for much assistance and encouragement in the prosecution of our zoological work.
The following is a list of the officers:—
Captain Sir George S. Nares, K.C.B., F.R.S.; succeeded by Captain John Maclear, F.R.M.S.
Lieut. George R. Bethell; succeeded by Lieut. James Deedes.
Lieut. the Hon. Foley C. P. Vereker; succeeded by Lieut. George Rooper.
Lieut. Gordon S. Gunn (subsequently became senior lieutenant).
Nav. Lieut. William H. Petley.
Sub-Lieut. James H. C. East (subsequently served as lieutenant).
Sub-Lieut. Charles W. de la P. Beresford (left the ship at Singapore).
Staff-Surgeon Richard W. Coppinger, M.D.
Paymaster Frederick North.
Engineer, John Dinwoodie.
Engineer, William Cook.
Boatswain, Alfred Payne.
(Lieut. Grenfell joined the ship at Singapore, and remained until the close of the commission.)
CHAPTER I.
FROM ENGLAND TO THE FALKLANDS.
After various delays, owing to defects in machinery, we finally bade adieu to the shores of England on the 25th of September, 1878, taking our departure from Plymouth.
On the second day at sea the little storm petrels appeared over our wake, and accompanied us, off and on, for most of our way to Madeira. These seemed to be of two kinds, the Thalassidroma pelagica and Thalassidroma leachii, the latter being sufficiently recognizable from their having forked tails, in which respect they differ from other species of the genus. Many attempts were made to catch them by means of hooks baited with fat, skeins of thread, etc., but all to no purpose; and I rather fancy that in this thoroughfare of the ocean the wily creatures have had too much experience of the arts of man, and are therefore not to be caught so easily as their more ignorant brethren of the southern hemisphere.
On the 28th of September, when 155 miles to the westward of Cape Finisterre, and during a fresh easterly breeze, a sparrow-hawk made his appearance, at first hovering round the ship, and ultimately settling on the rigging. It had probably strayed too far from the shore in the pursuit of some tempting prey, and had then lost its reckoning, being eventually blown to seaward. At all events, it had travelled some long distance, as it evinced its weariness by resting quietly and contentedly on the main-topgallant rigging, until one of the seamen, who had managed to climb up unobserved, suddenly laid hands on it. On placing it in a meat-safe, which we extemporised as a cage, it ate ravenously, as well it might after its long journey.
When in the latitude of Lisbon, and 180 miles to the westward of the Portuguese coast, a large "sea-flier" bird paid us a visit, soaring over the waves in our vicinity, and evidently on the look-out for garbage from the ship. The plumage of the upper surface of wings and body was of a dusky brown colour, the under surface of the body was whitish, and the wings were long and pointed; in mode of flight he resembled a large tern. He did not long remain with us, probably not finding it a sufficiently productive hunting-ground. I may here mention that on the 6th of October, when a hundred miles from Madeira, we sighted a bird answering the same description.
All opportunities of plying the tow-net were duly availed of, but owing to the unusually rapid speed of the ship, these were few. However, we succeeded in capturing many specimens of living Foraminifers (mostly of the genus Orbitolites), stalk-eyed Crustaceans, Radiolarians, an Ianthina, a few Salpæ, and the pretty little Pteropod Mollusc, the Criseis aciculata, besides many other organisms which the rapid motion of the net through the water had rendered unrecognizable. As it is usually found that these minute pelagic organisms are to be obtained from the surface in most abundance at night-time, and during the day retreat for some fathoms from the glare of the sunlight, I constructed a wooden apparatus on the principle of a kite, which I attached to the towing line at some three or four yards from the net, and which had the effect of dragging down the net some yards below the surface, and then retaining it at a uniform depth. It of course required to be adjusted each time to suit the required depth and the rate of the vessel, but it had this great advantage over the usual system of employing heavy weights, that the strain not being nearly so great, a light and manageable rope could be used; and that, moreover, the adjustment for depth could be readily made by altering the trim of this water-kite. When I first tried this apparatus, and before I had succeeded in trimming it satisfactorily, it caused great amusement to the bluejackets by the playful manner in which it manœuvred under our stern, now diving deeply towards our rudder post (the shimmer of the white wood in the deep blue water reminding