CHAPTER IV. 
THE CRUISES OF THE ‘PORCUPINE’ (continued). 
From Shetland to Stornoway.—Phosphorescence.—The Lchinothuride. 
—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.—Return to 
Cowes. 
Appenpix A.—Extracts from the Minutes of Council of the Royal 
Society, and other official documents referring to the Cruise of 
H.MLS. ‘ 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 bracketed numbers to the woodcuts in this chapter refer to the dredging 
stations on Plates IV. and V. 
WE left Lerwick on the 31st of August, and ran 
south- and westward, passing close to Sumburgh 
Head; Fair Isle, of evil repute among mariners, 
lying. on the southern horizon lke 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 Sumburgh. Past Norna’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 
