INDEX. 52 
291 ; Breguet’s metallic thermometer, 
293; Negretti and Zambra’s thermo- 
meter, 293. 
Thomson, Sir William, F.R.S., thermo- 
meter in a sealed glass tube, 296. 
Tisiphonia agariciformis, 74, 167. 
Toxopneustes brevispinosus, 459. 
Tripylus fragilis, 118, 459. 
Vis 
Variation, 9. 
Ventriculites simplex, 483 ; outer surface, 
484; section of the outer wall, 485. 
Verticordia acuticostata, 464. 
Ww. 
Wallace, Alfred Russel, ‘on 
selection, 8. 
Waller, Edward, dredging off the South 
coast of Ireland, Hebrides, and Shet- 
land Islands, 121 ; on the fauna of the 
Hebrides, 267. 
Wallich, G. C., M.D., F.L.S., the North 
Atlantic Sea-bed, 24, 271, 302. 
Wright, Professor Perceval, deep dredg- 
ing off the coast of Portugal, 276. 
Z. 
Zone of deep-sea corals, 16. 
Zoroaster fulgens, 153. 
natural 
THE END. 
