LIST OF FIGURES. 



Introduction. 



Figure 



A. TracE of the " Blake " (U. S. C. S.i). In pocket at end of Vol. I. 



B. Morro Light and Castle, Havana, with modern limestone terrace in 



foreground, from a photograph 



C. Western Slope of St. Kitts, from a photograph 



D. Pitons of St. Liicia, from a photograph 



E. Kingstown, St. Vincent, from a photograph 



Vol. I. PAOE 



xu 



XV 



xvii 

 xviii 



21, 

 22. 

 23. 

 24. 

 25. 

 26. 



I. Equipment of the " Blake." (Figs. 1-33.) 



Frontispiece. U. S. Coast and Geodetic Survey Steamer " Blake " (U. S. 



1. Brooke's detacher' (Sigsbee) . . 



2. Sir William Thomson's sounding machine (Thomson) 



3. Sigsbee's sounding machine (Sigsbee) .... 



4. Sigsbee's sounding maeliine, profile (Sigsbee) . 



5. Sigsbee's sounding machine, end view (Sigsbee) 



6. Sigsbee's detacher and Belknap sounding cylinder (Sigsbee) 



7. Section of Fig. 6 (Sigsbee) 



8. Belknap's cylinder detached from shot (Sigsbee) 



9. Comparative size of hemp and wire used for sounding (Sigsbee) 



10. Sounding lead with Stellwagen cup (Sigsbee) . 



11. Miller-Casella thermometer, ^ • • 



12. Negretti-Zambra thermometer, Italian model 



13. Siemens's sinker and resistance coil (Bartlett, U. S; C. S.) 



14. Wheatstone's Bridge (Bartlett, U. S. C. S.) . 



15. Siemens's deep-sea thermometer (Bartlett, U. S. C. S.) . 



16. Hilgard's salinometer (Sigsbee) ..... 



17. Sigsbee's water cup (Sigsbee) ...... 



18. Section of Sigsbee's water cup (Sigsbee) 



19. Mode of attachment of cups and thermometer (Sigsbee) . 



20. Miller-Casella thermometer in protecting case, with Sigsbee's 



ment (Sigsbee) ....... 



O. F. Midler's dredge (Thomson) 



" Blake " dredge frame ....... 



" Blake " dredge 



Bar and tangles ........ 



" Blake " trawl (Sigsbee) 



"Blake "trawl 



1 The authority from which the figure is derived is inserted in parentheses. 

 United States Coast Survey. 



C. S.) 



attach 



3 



4 

 6,7 

 7 

 8 

 10 

 10 

 10 

 12 

 12 

 15 

 16 

 17 

 18 

 19 

 21 

 23 

 23 

 23 



23 

 24 

 24 

 24 

 25 

 26,27 

 26 



u. s. c. s. = 



