CATALOGUE. — APPLICATION OP HVDRAULIC FORCES, SEAMANSHIP. 241 



theory to the dimensions of the ship Cuffhellj. Corrects 



some errors relative to the metacentric curve. 



On increasing the velocity of ships. Papers 

 on nav. arch. I. iii. l64. 



On the forms and properties of ships. Papers 

 on nav. arch. II. i. I. 



Chapman on finding the centres of gravity 

 of ships. Papers on nav. arch. II. ii. 85. 



Chapman on the measurement of ships. Pa- 

 pers on nav. arch. II. iii. 76. 



Donithorne's patent metal for sheathing. 

 Ilepert. VI. 308. 



A mixture of tin and zinc. 



Sir. G. Shee on the construction of ships. Ir. 



tr. VI. 15. Repert. IX. 339. 

 Bosquet's patent for improving ships. Rep. 



IX. 381. 



A composition for keeping off rats. 

 Charnock's history of marine architecture. 

 Phillips's tubes for driving copper bolls. S. 



A. XIX. 274. Nich. 8. III. 35. 

 To prevent their heads being flattened. 



Montuclaand Lalande. IV. 381. 



Penneck's patent for improvements in ship- 

 building. Repert. ii. I. 325. 



Brindley's patent for securing ship's beams. 

 Repert. ii. III. 1. 



Boswell's patent for triangular framing. Nich. 

 IX. 166. 



Elements and practice of naval architecture. 

 f. London, 1805. 

 Coulomb recommends, that when ships are launched, oak 



should be made to slide on elm, previously well rubbed 



with tallow by drawing heavy weights over it ; and that 



care should be taken to avoid loo great a velocity, which 



melts the tallow and increases the friction. 



A man of war of 74 guns requires about SOOO loads of 



timbe», of 50 cubic feet each, worth, at L.5 a load, L. 1 5000. 



A tree contains about 9 loads, and 3000 loads would cover 



)4 acres. The value of shipping in general is estimated at 



L.8 or L.io a ton. 



It is said that 180 000 pounds of hemp are required for 



the rigging of a first rate man of war. 

 VOL. 11. 



Masts. 



Bouguer. A. P. 1745. 309. Pr. I. viii. II. 

 A. P. Prix. II. i. 

 Camus. A. P. Prix. II. ii. 

 iioOTWJe Ai t de la mature. 1778. 

 E. M.Pl. V. Marine. PI. 20, 139- 

 Pakenham's temporary masts. S. A. X. 214. 

 Smart's patent for hollow masts. Repert. 



XIV. 17. 

 Leveque's masts. M. Inst. V. 16. 



Rudders. 



Pakenham's temporary rudder. S, A. VII. 



218. 

 Pakenham's mode of preserving a rudder. S. 



A. XI. 183. 

 Bolton's patent rudder. Repert. XVI. 152. 



Captain T. Hamilton hangs his rudder so that it may be 

 raised when it strikes, without being unshipped, and fixes 

 the tiller on the head of the rudder, instead of putting it 

 into a mortise of the rudder. 



Sails. 

 Sailmaker's assistant. Lond. 



Blocks. 



Hopkinson's spring block. Am. tr. III. 331." 

 To prevent the ship's heeling, from too sudden an im. 

 pulse of the wind. 



Cables. See Cordage- 

 Mode of securing cables. A. P. I. 287. 

 Perrault's machine for the preservation of 

 cables. M. A^. I. 45. 



Anchors. 



J. Bernoulli. A, P. Prix. Ill, iV. 

 Tr^saquet. A. P. Prix. III. v. 

 D. Bernoulli. A. P. Prix. Ill.vi. 

 Poleni. A. P. Prix. III. vii. 

 I i 



