CHAPTER IV. 



THE CRUISES OF THE ' PORCUPINE ' (continued). 



From Shetland to Stornoway. — PhosplLorescence. — The Echinothuridce. 

 —The Fauna of the ' Warm Area.'— End of the Cruise of 1869. 

 Arrangements for the Expedition of 1870. — From England to 

 Gibraltar. — Peculiar Conditions of the Mediterranean. — Eeturn to 

 Cowes. 



Appendix A. — Extracts from the Minutes of Council of the Koyal 

 Society, and other official documents referring to the Cruise of 

 H.M.S. 'Porcupine' during the Summer of 1870. 



Appendix B. — Particulars of Depth, Temperature, and Position at 

 the various Dredging-stations of H.M.S. 'Porcupine' in the 

 Summer of 1870. 



\* The Iracketed numbers to the woodcuts in this chapter refer to the dredging- 

 stations on Plates IV. and V. 



We left Lerwick on the 31st of Augiist, and ran 

 south- and westward, passing close to Sumburgh 

 Head ; Fair Isle, of evil repute among mariners, 

 lying on the southern horizon like a little grey 

 cloud. The weather was still very fine, and we 

 had a good tossing with scarcely a breath of wind 

 ia the famous Roost of Sumburgh. Past Noma's 

 eyrie on the ' Fitful Head ; ' past in the falling 

 shadows of the autumn night the rocky Island of 

 Foula, still the haunt of one or two pairs of the 

 great skua gull, Lestris cataractes, a species fast 



L 



