CHAPTER IV. 



THE CRUISES OF THE ' PORCUPINE ' (continued). 



From Shetland to Stornoway. — Phosphorescence. — The Uchinothuridce. 



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.— Keturn to 

 Cowes. 



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

 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 Predging-stations of H.M.S. 'Porcupine' in the 

 Summer of 1870. 



* * The bracketed numbers to the woodcuts in this chapter refer to the dredgivg- 

 stations on Plates IV. and V. 



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

 south- and westward, passing close to Sumhurgh 

 Head; Pair Isle, of evil repute among mariners, 

 lvino- 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 

 in the famous Roost of Sumhurgh. Past Noma's 

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

 shadows of the autumn night the rocky Island of 

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

 great skua gull, Lestris cataracies, a species fast 



L 



