CHAP. II.] MADEIRA TO THE COAST OF BRAZIL. 61 



CHAPTEK II. 



MADEIRA TO THE COAST OF BRAZIL. 



Return to Madeira. — The Black Coral. — Ophiacantha clielys. — Ophiomnsinm pnlchel- 

 lum. — Ceratias iiranoscopiis. — The Island of San Vicente. — Porto Praya. — The 

 Island of San lago. — A Red-coral Fishery. — The Guinea Current. — Balanoc/lossus. 

 — Luminosity of the Sea. — Pyrocystis. — Young Flounders. — Baihycrinus Aldri- 

 chianus. — Hyocrinus Bethellianus. — St. Paul's Rocks. — Fernando Noronha. — Low 

 Bottom Temperatures under the Equator. — Ceratotrochus diadema. — Pentaci'inus 

 Maclearanus. — Dredging at Moderate Depths. — Arrival at Bahia. 



Appendix A. — Table of Temperatures observed between Madeira and Bahia during 

 the months of July, August, and September, 1873. 



Appendix B. — Table of Serial Temperature Soundings down to 500 fathoms, taken 

 between Madeira and Station CII. (lat. 3° 8' N., long. 14° 49' W.). 



Appendix C. — Table of Serial Temperature Soundings down to 200 fathoms, taken 

 between Station CII. and Bahia. 



Appendix D. — Specific-gravity Observations taken between Madeira and Bahia dur- 

 ing the months of July, August, and September, 18Y3. 



When we reached Madeira we found, to our great regret, 

 that shortly before our arrival there liad been a rather severe 

 epidemic of small - pox in the town ; and as Captain Nares 

 thought it imprudent to give general leave, our stay was great- 

 ly abridged. One or two of the officers went on shore, and en- 

 joyed a short ramble over the lovely island, now in the height 

 of its summer beauty ; and a few of our friends visited us on 

 board while we were taking in our stock of fresh provisions, 

 and made our cabins gorgeous with offerings of flowers and 

 fruit. 



We left Funchal on the evening of the ITth of July, and 

 proceeded toward San Vicente in the Cape Yerde group. We 

 took a temperature sounding on the 18th, and on the 19th 

 sounded and dredged in 1125 fathoms, with a bottom of vol- 



