J1W THE Tl 



INy't 



DEPTHS OF THE SEA. 



AN ACCOUNT OF THE GENERAL RESULTS 



OF THE 



DREDGING CRUISES OF H.M.SS. 'PORCUPINE' AND 'LIGHTNING 



DURING THE SUMMERS OF 1868, 1869, AND 1870, 



UNDER THE SCIENTIFIC DIRECTION OF 



DR. CARPENTER, F.R.S., J. GWYN JEFFREYS, F.R.S., 

 AND DR. WYVILLE THOMSON, F.R.S. 



C. WYVILLE THOMSON, 



LL.D., D.Sc, F.R.SS. L.&E., F.L.S., F.G.S., Etc. 



Regius Professor of Natural IJ-isfn-nt in tin- University of Edinburgh, 



And Dim-tor of the Civilian Stiprtfyfic s/nfnfjh.e 'Challenger' Exploring Expedition. 



WITH NUMEROUS ILLUSTRATIONS AND MAPS. 



bonbon : 

 MA CM ILL AN AND CO. 



1873. 



