1814.] Experiments made at Greenland Dock. 47 



51. The same as the preceding, the bottom of the iron bar being 

 immersed 8-3905 feet : 



Velocity per second, 1 2 f. Motive weight, 277''i9 lbs. 



IV. Immersed Bodies placed obliquely. 



52, A parallelopipedon, i, with two square iron planes 7 feet 

 10^ inclies asunder, the centre of each plane being immersed 3 feet 

 below the surface of the water (fig. 5), Area of each plane, 2*97 18 

 feet : 



Velocity per second, G feet. 



53. Same as tlic preceding, but the planes were taken away and 

 only the bars kit : 



Velocity per second, 6 f. Motive weight, 55 303 lbs. 



54. Conductor with angular bars immersed 5-5 feet (fig. 6) : 

 Velocity per second, 12 f. Motive weight, 84-292 lbs. 



55. Conductor with parallelopipedon, P (fig. 7), AX, ra each 

 3 Jeet. Length of P, 10 feet. Centre of P immersed, 6 feet : 



Velocity per second, 12 f. Motive weight, 136-83 lbs. 



56. Same as the preceding, except that instead of the pointed 

 extremity, a, (fig. 7) the immersed body is terminated by an 

 inclined plane, the uppei surface on a level with that of the im,- 

 mersed body, and of the same width. Length of the inclined plane 

 2 feet 10 inches. Length of the under or slanting side, 3 feet; 



Velocity per i^econd, 12 f. Motive weight, 148-77 lbs. 



57. Same as in expcr. 55, but the length of r a (fig. 7) reduced 

 to 1-5 foot : 



Velocity per second, 12 f. Motive weight, 152-30 lbs. 



58. Same as the preceding, but the pointed end, r a (fig. 7) 

 wanting : ' 



Velocity per second, 12 f. Motive weight, 157-47 lbs. 



59. Same as in exper. 57, but the end, r a (fig. 7), foremost : 

 Velocity per second, 12 f. Motive weight, 144 32 lbs. 



60. Same as in exper 56, but the inclined plane foremost : 

 Velocity per second, 12 f. Motive weight, 144-27 lbs. 



61. Same as in exper. 59, but the foremost angular body, ra 

 (fig. 7)> only 1 foot ill leiigih : 



Velocity l)er second, 12 f. Motive weight, 143-82 lbs. 



62. Same as in exper. 58, but the square end of the immersed 

 body foremost : 



Velocity per second, 12 f. Motive weight, 224-60 lbs. 



63. An immt-rsed parallelopipedon 10 feet long, i foot broad 

 and 1 foot thick (fifT. 8) : ' 



Velocity per second, 12 f. Motive weight, 241 65 lbs. 



