324 



HEGRETTI AND ZAMBEA, HOLBOEN VIADUCT, E.G., 



FIG. A 4. 



FIG. A 1, 



FIG. A 2. 



FIG. A 3. 



1390 Walker's Patent Harpoon Ship-Log (fig. A 1.) . 



1391 Ditto ditto (fig. A 2.) ....... 



1392 Ditto ditto, Detached Ship-Log (fig. A3.). 



1393 Ditto Harpoon Sounding Machine (fig. A 4) without Lead 

 1393* Lead for Sounding Machine 



8. d. 



3 10 

 330 

 330 

 330 

 110 



FIG. A 5. 



I 



FIG A 6. 



FIG A 7. 



1394 Massey's Patent Ship-Log (fig. A 5.) . 



1395 Ditto, Improved ditto, ditto (fig. A 6.) . 



1396 Massey's Sounding Machine (fig. A 7.), with Lead 



3 10 

 2 15 

 400 



