LIST OF ILLUSTRATIONS. Vli 



FIG. PAGE 



52. Hastigerina Muurayi (sp. n.). From the surface. Ten times the natural 



size 252 



53. A Page of the Temperature Curve-book, for Station 325 263 



54. Diagram of the Vertical Distribution of Temperature at Station 112. 272 



55. Diagram of the Vertical Distribution of Temperature at Station 129. 274 



56. Diagram of the Vertical Distribution of Temperature at Station 327. 274 



57. Diagram showing the Effect of a "Continuous Barrier" on Ocean Tem- 



perature 277 



58. Challengeria. Four hundred times the natural size 292 



59. Forms of the Challengerida 292 



60. Flabellum Apertum, Moseley. Natural size 295 



61. Flabellum Angulare, Moseley. Natural size 295 



62. Chauliodus Sloanii. From the upper water. One-third the natural size. 300 



VIGNETTES. 



Costume of the Inhabitants of San Miguel 48 



A Catamaran, Fernando Noronha 57 



Penguins at Home 171 



Irrigation, Porto Praya 231 



EXPLANATION OF THE PLATES. 



PLATE To face page 



XV. — The Track of the Ship from Bermudas to Madeira 14 



XVI. — Diagram of the Vertical Distribution of Temperature between 



Bermudas and Madeira 18 



XVII. — Meteorological Observations for the Month of June, 1873 23 



XVIII. — Meteorological Observations for the Month of July, 1873 50 



XIX. — The Track of the Ship from Madeira to Station 102 64 



XX. — Diagram of the Vertical Distribution of Temperature between 



Madeira and Station 102 76 



XXI. — The Track of the Ship from Station 102 to San Salvador 82 



XXII. — Diagram of the Vertical Distribution of Temperature between 



Station 102 and Pernambuco 87 



XXIII. — The " Challenger" at St. Paul's Rocks 96 



XXIV. — Meteorological Observations for the Month of August, 1873... 102 



XXV. — Fernando Noronha 108 



XXVI. — Meteorological Observations for the Month of September, 1873. 124 

 XXVII. — The Track of the Ship from San Salvador to the Cape of Good 



Hope 128 



XXVIII. — Diagram of the Vertical Distribution of Temperature between 



San Salvador and the Cape of Good Hope 132 



XXIX. — The Island of Tristan d'Acunha 138 



XXX. — Meteorological Observations for the Month of October, 1873 . . 156 



XXXI. — Nightingale Island 164 



