REPORT SpcdoL 



ON THE 



SCIENTIFIC RESULTS 



OF THE 



VOYAGE OF H.M.S. CHALLENGER 



DURING THE YEARS 187376 



UNDER THE COMMAND OF 



Captain GEORGE S. NARES, R.N., F.R.S. 



AND THE LATE 



Captain FRANK TOURLE THOMSON, R.N. 



PREPARED UNDER THE SUPERINTENDENCE OF 



THE LATE 



Sir C. WYVILLE THOMSON, Knt., F.R.S., &c. 



REGIUS PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF EDINBURGH 

 DIRECTOR OF THE CIVILIAN SCIENTIFIC STAFF ON BOARD 



AND NOW OF 



JOHN MURRAY, LL.D., Ph.D., &c, 



ONE OF THE NATURALISTS OF THE EXPEDITION 



Physics and Chemistry— Vol. II. 



PublisbeiJ bp ©roer of $er Jflajestp's (Sobcmmettt 



PRINTED FOR HER MAJESTY'S STATIONERY OFFICE 



AND SOLD BY 



LONDON :— EYRE & SPOTTISWOODE, EAST HARDING STREET, FETTER LANE 



EDINBURGH:— ADAM & CHARLES BLACK 



DUBLIN :— HODGES, FIGGIS, & CO. 



1889 

 Price Fifty-two Shillings and Sixpence. 



