X1V CONTENTS. 
—Change of Arrangements.—Second Cruise ; to the Bay of Biscay.— 
Dredging successful at 2,435 fathoms.—Third Cruise ; in the Channel 
between Froe and Shetland.—The Fauna of the ‘Cold Area.’ Page 82 
Appenpix 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 ves’ ane ROGGE res 
Aprrnpix B,—Particulars of Depth, Temperature, and Position at the 
various Dredging Stations of H.M.S. ‘ Porcupine, in the Summer of 
USGOS Mee at ee eal Gite! be. Mae aa Muh ees oe tees, Sone ae eae ma 
CHAPTER IV. 
. Z _ ‘ - ’ . 
THE CRUISES OF THE ‘PORCUPINE’ (continued). 
From Shetland to Stornoway.—Phosphorescence.—The Echinothuride,.— 
The-Fauna of the ‘Warm Area.’—End of the Cruise of 1869.—Arrange- 
ments for the Expedition of 1870.—From England to Gibraltar. 
Peculiar Conditions of the Mediterranean.—Return to Cowes. Page 145 
Apprnpix A.—Extracts from the Minutes of Council of the Royal Society, 
and other official Documents referring to the Cruise of H.M.S. ‘ Porcu- 
pine,’ during the Summer of 1870... ... ... ... ... «. Page 197 
ApprenpIx B.—Particulars of Depth, Temperature, and Position at the 
various Dredging Stations of H.M.S. ‘ Porcupine, in the Summer of 
STON she se Sots leah eee tak, Weeel maeel) cohen) (dno ® eee acer) eae 
CHAPTER Y. 
DEEP-SEA SOUNDING. 
The ordinary Sounding-iead for moderate Depths.—Liable to Error when 
employed in Deep Water.—Early Deep Soundings unreliable.—Inproved 
Methods of Sounding.—The Cup-lead.—Brooke’s Sounding Instrument.— 
The ‘ Bull-dog ;’ Fitzgerald’s ; the ‘ Hydra.’—Sounding from the ‘ Porcu- 
pine. —The Contour of the Bed of the North Atlantic ... Page 205 
CHAPTER VI. 
DEEP-SEA DREDGING. 
The Naturalist’s Dredge.—O. F. Muller.—Ball’s Dredge.—Dredging at 
The Dredge-rope.-_ Dredging in Deep Water.—The 
‘Hempen tangtes.—Dredging on board the ‘ Porcupine. — The Sieves.— 
moderate Depths. 
