Scientific American Volume 88 Number 16 (April 1903) . As illustrated, thewater is discharged through a chamberformed by a casing let into the bottom ofthe hull of the vessel. This casing is pro-vided with a spout or discharge tube pro-jecting rearwardly and lying flush with theface of the hull. The upper wall of thecasing is provided with an opening communi-cating with the hold of the vessel, but isnormally closed by a valve W. A steam pipeS enters the chamber at a point to the rearof this valve. A jet tube is coupled to the end of thesteam pipe, and projects into the discharge pipe. To disch
Scientific American Volume 88 Number 16 (April 1903) . As illustrated, thewater is discharged through a chamberformed by a casing let into the bottom ofthe hull of the vessel. This casing is pro-vided with a spout or discharge tube pro-jecting rearwardly and lying flush with theface of the hull. The upper wall of thecasing is provided with an opening communi-cating with the hold of the vessel, but isnormally closed by a valve W. A steam pipeS enters the chamber at a point to the rearof this valve. A jet tube is coupled to the end of thesteam pipe, and projects into the discharge pipe. To discharge the bilge water from the vessel, steamis first admitted to the jet tube, and then the valve Wis opened. The steam in escaping from the jet tubecreates a vacuum in the discharge pipe and causes the water in the hold to be sucked outinto the chamber, and pass out with the steam throughthe discharge pipe. If it be desired to scuttle theship, this can be easily done by opening the bilge-water valve without admitting steam to the cham-. of the Nova. The image is on the very edge of theplate, and accordingly was compared with fifteen otherstars at about the same distance from the center ofthe plate. The Nova was compared twice with eachstar by each observer. The value of the grade wasmuch larger than usual, and equaled and forthe two observers. The mean result for all wasmagnitude , with an average deviation, for theseparate stars, of ± The evening of March 27 was cloudy and also theearly part of March 28. One plate, however, taken onthe latter date gave the magnitude, Severalphotographs were taken on March 29, 31, and April1, and gave the mean magnitudes, , , and is probable that the fainter stars are really fainterthan these magnitudes indicate, but the latter willserve to determine the relative changes in the Novaas it grows fainter, and thus render the results of dif-ferent observers comparable. All the magnitudes canla
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