OF MINERALS, ETC. 



2463. 

 2464. 

 2465. 

 2466. 

 2467. 



2468. 

 2469. 



2470. 



2472. 



2473. 



* 

 scale, 



FIG. 2473. 



Pair of Marine Engines^ of superior make and extra power, with 4-incli. 

 wheels, reversing gear, copper boiler, cocks, safety valve 550 



DITTO, same construction as above, with 6-inch, paddle wheels, to drive 5 to 

 6 feet boat . . . . . 9 to 12 



DITTO, with 7-inch, wheels, to drive 7 to 8 feet boat 13 to 18 

 Larger sizes made to order. 



WOOLLASTON'S APPAEATUS, showing the action of the atmosphere, or condensing 

 engine . . . . . 7 6 and 10 



Paddle Wheel Steamboats^ suitable for marine engine No. 2460, with rigging, 

 etc., complete, 4 feet long, 8 10s. ; 3 feet 6 inches long . 700 



DITTO, DITTO, extra finished, 4 feet long, 11 ; 3 feet 6 inches 9 10 



SCEEW STEAMBOATS, suitable for marine engine No. 2460, rigged, etc., complete, 

 4 feet long, 7 15s. ; 3 feet 6 inches long . . . 5 10 



DITTO, DITTO, extra finished, 4 feet, 10 10s. ; 3 feet 6 inches long 900 



Models of Paddle and Screw Steamers (not working), including the " Irena," 

 " Trinity Yacht," " Cosmopolitan," etc., 2 feet long, each . 3 10 



MODEL OF THE " GEEAT EASTEBN," rigged, etc., complete, made to scale, very 

 accurate, 32 feet to the inch, length of model 21f inches, under glass case 

 (fig. 2473), 3 10s. ; or extra finished . . . 600 



* Sections, models, or working models of ships of any description made to order on 

 from. draughts or drawings. 



MINEEALOGY, GEOLOGY, AND CO1STCHOLOGY. 



To assist" beginners in the study of these interesting and useful sciences, the 

 following educational collections are arranged in neat cabinet cases, with glass covers ; 

 all are named, carefully labelled, and accompanied with brief descriptions of their uses 

 in the manufactures and -arts. 



2474. Minerals; 'small collection, 24 specimens, 2s. ; ditto, larger specimens 060 



2475. MiNEEALtf 40 6s. ; . 10 



P 2 



