92 



MR RUSSELL'S RESEARCHES IN HYDRODYNAMICS. 



Experiments of 1834, with the Skiff; 

 The motion being produced by the direct application of the power of horses. 



Weight of the Skiff, 810 lb. 



Weight of observers, ballast, &c 430... 



Total Weight moved, 1 240 . . . 



Depth of immersion by the gauges at the centre P" when at rest, 2.7 inches. 



Length of the Skiff on the gunwale, 31.25 feet. 



Length of the Skiff on the keel, 30.75 ... 



Maximum breadth, 4.21 ... 



For the form of the Skiff, see Plate III. Fig. 5. 



The first column contains the space described during the experiment ; the 

 second column consists of the resistances as registered at the commencement of the 

 space, at the end of the space, and at equidistant points of division ; the third 

 column consists of the time in which the space was described ; the fourth the 

 velocity in miles per hour ; and the fifth contains the indications of the gauges of 

 immersion. 



Space. 

 Feet. 



Moving Force. 

 Lbs. , 



Time. 

 Sees. 



Velocity. 

 Miles per hour. 



Immersiort. 

 Inches. 



600 



113 



8.0108 



2.0 



500 



86 



4.0096 



2.6 



500 



80 



4.2613 



2.4 



1000 



132 



5.1652 



2.2 



500 



60 



5.6816 



2.2 



1000 



116 



5.9288 



2.0 



