LIST OF FIGURES. 
INTRODUCTION. 
FIGURE Von. I. PAGE 
A. Track of the “Blake” (U. S. C. 5.1). In pocket at end of Vol. I. 
B. Morro Light and Castle, Havana, with modern limestone terrace in 
foreground, from a photograph ‘ ` : i + " “ RH 
C. Western Slope of St. Kitts, from a photograph 3 È A . ^. X 
D. Pitons of St. Lucia, from a photograph  . i A 4 ^ . . xvii 
E. Kingstown, St. Vincent, from a photograph n . a ‘ . xviii 
I. EqurewENT or THE “Brake.” (Figs. 1-33.) 
Frontispiece. U.S. Coast and Geodetic Survey Steamer “Blake ” Ms 8. C. ^E 
1. Brooke's detacher (Sigsbee) 3 
2. Sir William Thomson’s sounding machine (Thomson) ` : . . 4 
3. Sigsbee’s sounding machine (Sigsbee) d : ; : i v UT 
4. Sigsbee's sounding machine, profile (Sigsbee) . 7 
5. Sigsbee's sounding machine, end view (Sigsbee) ` 4 . . 8 
6. Sigsbee's detacher and Belknap sounding eylinder (Sigsbee) . . v 0 
. Section of Fig. 6 (Sigsbee)  . : i ; : . 10 
8. Belknap's cylinder detached from dot (Sigsbee) ` : A x AU 
9. Comparative size of hemp and wire used for sounding (Sigsbee) ` ve E 
10. Sounding lead with dateci cup (Sigsbee) . . ` ‘ , v de 
11. Miller-Casella thermometer, 4 : ‘ ‘ . . ` è 15 
12. Negretti-Zambra dE I talin motel A 5 ; i + 1 
13. Siemens's sinker and resistance coil (Bartlett, U. S. C. = i x «I 
14. Wheatstone's Bridge (Bartlett, U. S. C. S) . ` + e de 
15. Siemens's deep-sea thermometer (Bartlett, U. S. C. S. "we i : >. T9 
16. Hilgard's salinometer (Sigsbee) . ` ` . . . . € ql 
17. Sigsbee's water bu (Sigsbee) . : r ‘ . . " . + 26 
18. Section of Sigsbee's water cup (Sigsbee) A ‘ > s Xm 
19. Mode of attachment of cups and thermometer (Bigsbeo) . è 23 
20. Miller-Casella thermometer in pr oteeting ease, with Sigsbee's atti 
ment (Sigsbee) . i ‘ s ‘ : : í ‘i 28 
91. O. F. Müller's dredge (Thomson) : ; i A i i ; . 24 
22. “Blake” dredge frame . . , : $ . 3 . . 2 
23. “Blake” dr edge : : : È $ : ; , ` . . 2 
24. Bar and tangles A ` i : ` ` : - * . 4 
95. * Blake" trawl (igen) . ‘ : \ ha ` : 26, 27 
26. “Blake” trawl + . . ‘ x > ` . x ... 20 
ca 
1 The authority from which the figure is derived is inserted in parentheses. U.S. C. 
United States Coast Survey. 
