APPENDIX. 939 



2178fq. Model of the inverted cylinder compound engines, 

 P. and O. Co.'s ship " Fera" on the compound system of 2,000 

 horse-power, 1872. J. and G. Ronnie. 



2178fr. Model of the first screw-steamer in the British Navy, 

 '* Mermaid " afterwards named the " Dwarf." Built in 1840. 

 Purchased from J. and G. Rennie by the British Admiralty, 

 according to Sir George Cockburn's advice, on the condition she 

 should steam 12 miles per hour (7th March 1842) tried 15th May 

 1843. Mean speed of 6 runs 12-142 miles. J. and G. Rennie. 



2178fs. Model of H.M. Gun Boats "Arrow" and 

 " Bonetta." Built by J. and G. Rennie, 1871. Length 85 ft., 

 breadth 26 ft., depth 8 ft. 10 in. ; tons, 244. To carry one 18 ton 

 gun. J. and G. Rennie. 



2178ft. Model of the Iron Paddle-wheel Steamer 

 <* Queen." Built and fitted with engines by J. and G. Rennie, 

 1842. Length 160 ft., breadth 17 ft., depth 9 ft. Speed between 

 17 and 18 miles per hour, which exceeded that of any vessel on 

 the Thames. . J. and G. Rennie. 



2178fu. Model of Indian Famine Relief Steamers. 



Built by J. and G. Rennie, 1874. Date of order, 24th February. 

 Date of launch, 30th March. Tried under steam, 4th April. 

 Length 90 ft., beam 14 ft., depth 5 ft. 6 in. ; indicated horse- 

 power, 100. Built complete with engines in 35 working days. 



J. and G. Rennie. 



2178fw. Model of Twin-Sere w Gun Boats. Built for 

 the East Indian Government by J. and G. Rennie, 1857. Length, 

 70 ft., breadth 1 1 ft., draught 2 ft. 6 in. ; nominal hors^-power, 

 20 ; indicated horse-power, 76 ; speed, 9^ miles. Armament, one 

 long brass 12-pr., 18 cwt. J* and G. Rennie. 



2178fx. Model of Brazilian Twin-Screw Ironclad Gun 

 Boats " Colombo and " Cabral." Built by J. and G. 

 Reunie, 1866. Length 160 ft,, breadth 34 ft., depth 17 ft. ; tons, 

 858 B.M. ; nominal horse-power, 240 ; speed, 10 knots. Arma- 

 ment, 4 68-prs. J. and G. Rennie. 



2178fy. Model of Twin-Screw Gun Boats. Built for 

 the Spanish Government by J. and G. Rennie, 1859. Length 

 90 ft., breadth 14 ft., draught 2 ft. 6 in. ; horse-power, 30. 



J. and G. Rennie. 



2178ga. Model of Mr. Joseph Maudslay's Original Oscil- 

 lating Cylinder Engines. Date 1827. (The arrangement for 

 working the air pump is not that originally fitted.) 



Maudslay, Sons, and Field. 



