—Change of Arrangements.—Second Cruise; to the Bay of Biscay.—Dredging successful at 2,435 fathoms.—Third Cruise; in the Channel between Fæ̈roe and Shetland.—The Fauna of the 'Cold Area.' Page. 82
Appendix A.—Official Documents and Official Accounts of preliminary Proceedings in connection with the Explorations in H.M. Surveying-vessel 'Porcupine,' during the Summer of 1869 Page 133
Appendix B.—Particulars of Depth, Temperature, and Position at the various Dredging Stations of H.M.S. 'Porcupine,' in the Summer of 1896 Page 142
CHAPTER IV. THE CRUISES OF THE 'PORCUPINE' (continued)
From Shetland to Stornoway.—Phosphorescence.—The Echinothuridae.—The Fauna of the 'Warm Area.'—End of the Cruise of 1860.—Arrangements for the Expedition of 1870.—From England to Gibraltar.—Peculiar Conditions of the Mediterranean.—Return to Cowes. Page 145
Appendix A.—Extracts from the Minutes of Council of the Royal Society, and other official Documents referring to the Cruise of H.M.S. 'Porcupine' during the Summer of 1870 Page 197
Appendix B.—Particulars of Depth, Temperature, and Position at the various Dredging-stations of H.M.S. 'Porcupine' in the Summer of 1870 Page 202
CHAPTER V. DEEP-SEA SOUNDING.
The ordinary Sounding-lead for moderate Depths.—Liable to Error when employed in Deep Water.—Early Deep Soundings unreliable.—Improved Methods of Sounding.—The Cup-lead.—Brooke's Sounding Instrument.—The 'Bull-dog'; Fitzgerald's; the 'Hydra.'—Sounding from the 'Porcupine.'—The Contour of the Bed of the North Atlantic Page 205
CHAPTER VI. DEEP-SEA DREDGING.
The Naturalist's Dredge.—0. F. Müller.— Ball's Dredge.—Dredging at moderate Depths.—The Dredge-rope.—Dredging in Deep Water.—The 'Hempen tangles.'—Dredging on board the 'Porcupine.'—The Sieves.—
