viii 
THE VOYAGE OE H.M.S. CHALLENGER. 
CHAPTER XX. 
Valparaiso to Cape Tres Montes — The Cirripedia and Pyenegqnida — Through the Messier 
Channel, Sarmiento Channel, and the Strait of Magellan to the Falkland Islands— The Isopoda — 
The Falkland Islands — Fossils — The Scaphopoda and Gasteropoda — The Anomura, 
CHAPTER XXI. 
Falkland Islands to Monte Video — The Deep-Sea Fishes — Monte Video — The Gephyrea — 
Monte Video to Ascension — Description of the Deposits — On Deep-Sea Deposits in General — 
Ascension — Ascension to Porto Praya— Pelagic Diatoms — Infusoria — Pyrocystis — Coccospheres 
and Rhabdospheres — Bathybius — Cape Verde Islands to England — Synoptical Table of the 
Voyage — The Botany of the Expedition — Challenger Collections and Publications, 
CHAPTER XXII. 
Density of Sea Water — Composition of Ocean Water Salts — Geographical and Bathymetrical 
Distribution of Specific Gravity — Carbonic Acid, Nitrogen, and Oxygen in Sea Water — Discussion 
of Meteorological Observations as bearing on Oceanic Circulation, ..... 
APPENDICES. 
Appendix 
I. Explanation of Symbols and Abbreviations used in the Charts and Diagrams, 
II. Revised Table showing the positions of the Soundings obtained by H.M.S. Challenger, the 
Temperature and Specific Gravity of the Surface and Bottom Water, and the Stations 
where Serial Temperatures, Trawlings, and Dredgings were procured, 
III. Report on the Chronometers supplied to, and the Meridian Distances obtained by H.M.S. 
Challenger, between the 1st December 1872 and the 12th June 1876, by Staff-Commander 
T. H. Tizard, R.N. ... . 
IV. Report on the Health of the Crew of H.M.S. Challenger, during the years 1873-76. By 
Fleet-Surgeon George Maclean, R.N. ....... 
V. Chemical Analyses, .......... 
VI. Bibliography, giving the Titles of Books, Reports, and Memoirs referring to the Results of 
the Challenger Expedition, ........ 
VII. List of Reports on the Scientific Results of the Expedition, .... 
VIII. Letters addressed by the Admiralty to the Captain of H.M.S. Challenger, and the Director 
of the Civilian Scientific Staff, after the Arrival of the Expedition in England, . 
Index, 
PAGE 
849-901 
902-947 
948-1003 
1005 
1007-1015 
1017-1026 
1027-1031 
1033-1051 
1053-1063 
1065-1072 
1073 
1075-1110 
(For Lid of Illustrations in this Part see First Part.) 
