Archive image from page 191 of The depths of the sea;. The depths of the sea; an account of the general results of the dredging cruises of SS. 'Porcupine' and 'Lightning' during the summers of 1868, 1869 and 1870, under the scientific direction of Dr. Carpenter, J. Gwyn Jeffreys, and Dr. Wyville Thomson depthsofseaaccou02thom Year: 1874 148 THE DEPTHS OF THE SEA. [chap. iv. arranged vertically, and this peculiar tissue forms a complete sheath surrounding a pulpy mass of gra- nular horny and sarcodic matter which fills the interior. In this inner spongy suhstance sheaves of similarly shap
Archive image from page 191 of The depths of the sea;. The depths of the sea; an account of the general results of the dredging cruises of SS. 'Porcupine' and 'Lightning' during the summers of 1868, 1869 and 1870, under the scientific direction of Dr. Carpenter, J. Gwyn Jeffreys, and Dr. Wyville Thomson depthsofseaaccou02thom Year: 1874 148 THE DEPTHS OF THE SEA. [chap. iv. arranged vertically, and this peculiar tissue forms a complete sheath surrounding a pulpy mass of gra- nular horny and sarcodic matter which fills the interior. In this inner spongy suhstance sheaves of similarly shaped spicules are likewise arranged ver- tically, but much more loosely; and the projecting scales forming the head of Thecophora ibla are formed by the projecting ends of such sheaves. Among echinoderms, Ophiacantha spimilosa was one of the Fio. 21.—Thecophora ihla, Wyvillf. Thomson. Twice the natural size. (No. 70.) prevailing forms, and we were greatly struck with the brilliancy of its phosphorescence. Some of these hauls were taken late in the evening, and the tangles were sprinkled over with stars of the most brilliant uranium green; little stars, for the phos- phorescent light was much more vivid in the younger and smaller individuals. The light Avas not constant, nor continuous all over the star, but sometimes it struck out a line of fire all round the disk, flashing,
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