"We have paid out 3500 fathoms already, Captain, but, judging from the rate the reel goes at, we are still some distance from bottom." As he spoke, he pointed to a tall derrick temporarily rigged up at the stern of the vessel for the purpose of working the sounding apparatus, and surrounded by a group of busy men. Through a block pulley strongly lashed to the derrick, a stout cord of the best Italian hemp, wound off a large reel placed amidships, was now running rapidly and with a slight whirring noise. "I hope it's not the 'cup-lead' you are using, Brownson?" said the Captain, after a few minutes observation. "Oh no, Captain, certainly not," replied the Lieutenant. "It's only Brooke's apparatus that is of any use in such depths." "Clever fellow that Brooke," observed the Captain; "served with him under Maury. His detachment of the weight is really the starting point for every new improvement in sounding gear. The English, the French, and even our own, are nothing but modifications of that fundamental principle. Exceedingly clever fellow!" "Bottom!" sang out one of the men standing near the derrick and watching the operations. The Captain and the Lieutenant immediately advanced to question him. "What's the depth, Coleman?" asked the Lieutenant. "21,762 feet," was the prompt reply, which Brownson immediately inscribed in his note-book, handing a duplicate to the Captain. "All right, Lieutenant," observed the Captain, after a moment's inspection of the figures. "While I enter it in the log, you haul the line aboard. To do so, I need hardly remind you, is a task involving care and patience. In spite of all our gallant little donkey engine can do, it's a six hours job at least. Meanwhile, the Chief Engineer had better give orders for firing up, so that we may be ready to start as soon as you're through. It's now close on to four bells, and with your permission I shall turn in. Let me be called at three. Good night!" "Goodnight, Captain!" replied Brownson, who spent the next two hours pacing backward and forward on the quarter deck, watching the hauling in of the sounding line, and occasionally casting a glance towards all quarters of the sky. It was a glorious night. The innumerable stars glittered with the brilliancy of the purest gems. The ship, hove to in order to take the soundings, swung gently on the faintly heaving ocean breast. You felt you were in a tropical clime, for, though no breath fanned your cheek, your senses easily detected the delicious odor of a distant garden of sweet roses. The sea sparkled with phosphorescence. Not a sound was heard except the panting of the hard-worked little donkey-engine and the whirr of the line as it came up taut and dripping from the ocean depths. The lamp, hanging from the mast, threw a bright glare on deck, presenting the strongest contrast with the black shadows, firm and motionless as marble. The 11th day of December was now near its last hour.