a On the Stability of Vessels. (Marca, 
Experiments with rhombus. (See model 3.) Length, 24 inches. 
Breadth, 9 inches. Total depth, 74 inches. Immersion, 4+ inches, 
Weight of water displaced, 282°66 oz. 
5° | oe | 15° | 20° | 25° J] 30° | Angles of inclination. 
Exper. 1,—Centre of Gravity, 2 inches. | 
2-872] 2993 | 2913] 2934] 2-955]  2:976 | Metacentre. 
21:48 | 43°81 66°82 90°31 | 11408 | 137:92 | Momentum, 
Exper. 2.—Centre of Gravity, 2°25 inches. 
15°07 | 31°42 | 48°92 | 67-40 | 86°69 | 106:10 | Momentum. 
Experiments with parallelopipedon. (See model 4.) Length, 
24 inches. Breadth, 41 inches. Total depth, 71 inches. Immer- 
sion, 41 inches. Weight of water displaced, 279°53 oz. 
5° | loo. | 15> | 202 | 259} 30° | Angles of inclination. 
Exper. 1.—Centre of Gravity, 1°45 inch. 
2474 2-486 27498 2-509 2'524 2°533 | Metacentre, 
24:96 | 50°30 | 75°81 | 101-30. | 126°55 | 151:36 | Momentum. 
Exper. 2,—Centre of Grayity, 2°25 inches. 
SAT | 11-46 | 17°93 | 24:81 | 32°04 | 39°53 | Momentum. -* 
Metacentre by M. Bouguer’s theorem, 2°625 inches. 
1939 | 1:926] 1911] 1899] 1°885] 1872 | Centre of gravity when 
model 4 had one-eighth the stability of model 1. 
Experiments with rhombus. (See model 5.) The middle of 
the immersed part of the model is a right angle triangle, which 
terminates at each extremity in aright line. Length, 24 inches. 
Breadth, 9 inches. Total depth, 74 inches. Immersion, 44 inches. 
Weight of water displaced, 140°56 oz. 
5° |) 610e) Cf 5? | «209 «| «25° «| «(80° | Angies of inclination. 
Exper. 1,—Centre of Gravity, 2°25 inches, 
ATA ANTA A\7A ANITA A:174 | Metacentre, 
A696 69-99 92-49 | 114-29 | 135°22 | Momentum, 
Exper. 2.—Centre of Gravity, 3 inches. 
14:38 | 28°65 | 42°71 | 5643 | 69°73 | 82:50 | Mementam. 
ATA 
23°57 
Exper. 3.— Centre of Gravity, 3°50 inches. 
8-26 | 16:45 ] 2452 | 32-40 | 40°03 | 47:36 | Momentum, 
Experiments with rhombus. (See model 6.) The immersed 
art of the model is an inverted pyramid. Length, 24 inches. 
Breadth, 9 inches. Total depth, 71 inches. Immersion, 4+ inches, 
Weight of water displaced, 93°75 oz. 
