490 



NEGRETTI AND ZAMBRA, HOLBOKtf VIADUCT, B.C., 



3009 



3010 

 3011 



3012 



3013 



3014 



3015 



3016 



3017 



3018 



3019 



FIG. 3011. 



Locomotive Engines, Working Models, of superior finish and larger size, of 

 Bright Metal (fig. 2109 and 2109*). 



330 440 550 6 6 8 8 10 10 

 Ditto ditto Six Wheels, with Tender, as fig. 3010 . . 14 14 

 Working Model Locomotive Engine, of bright brass, highly finished, 

 with japanned tender and carriage, and Circular Railway (fig. 3011). 



8 10 10 10 12 12 



FIG. 3018. 



d. 



s. d. 



Working Model of Steam Fire Engine, will throw a jet 



of water a considerable distance .... 15 15 



Working Model of a Marine Beam Engine, with 



paddle-wheels, &c 



Working Model of Penn's Vibrating Engine. These 



engines, being simple and compact, are extensively 



employed in the Thames steam -boats . . from 

 Model Steam-Boats, fitted with working engines and 



Paddle Wheels, or Screw Propeller . . 10 10 15 15 25 

 Model of Perkins' Steam Gun, for projecting bullets, 



with a strong boiler, generating steam at a pressure 



of 200 k lbs. per square inch ...... 



Painted Wooden Sectional Models of High and Low 



Pressure Engines and Locomotives, of various con- 

 structions, showing the exterior of the engine, and 



the working of the parts, such as the cylinder, 



condenser, piston, valves, &c. . . . from 880 12 12 

 Small Sectional Working Model of Condensing Engine, 



made of cardboard and metal (fig. 3018) . 

 Sectional Diagrams and Plans of Steam Engine, &c., 



suited for Lectures, various according to size, to order. 



25 30 



20 



14 



2 10 330 



