KERGUELEN ISLAND. 287 
all that we knew, until the other day, of the abyssal fauna of the 
Southern Ocean. In these eight hauls over 300 new species and 
about 125 new genera of animals were discovered, and nearly half 
of these new species were brought up once, and once only; while 
more recent expeditions, in waters whose fauna is infinitely better 
known, such as the Danish Jngolf expedition in the North Atlantic, 
the French Caudan Expedition in the Gulf of Gascony, and the cruises 
of the Prince of Monaco, using new and more efficient methods of 
dredging, and making more minute examination of the material 
dredged, all show that the proportion of new discoveries tends to 
increase, and make us regret very deeply indeed that Great Britain 
has ceased, for over twenty years, to pursue the work of deep-sea 
zoological investigation. 
Lastly, let me reiterate the one request that the naturalist at 
home makes always of the collector abroad, and that is—to collect 
everything, even the invisible. After everything that the collector 
can discriminate has been selected, what remains is likely to be no less 
valuable. The larger animals, the weeds and zoophytes, the dredge 
itself, if possible, must be washed, and the washings strained off and 
preserved ; sand and mud must in like manner be carefully stirred 
and washed, that the contained crustacea and other inhabitants may 
be sifted out in fine sieves and preserved in bulk; and even the 
residual sand and mud must not all be simply dried, but must in 
part be placed in spirits for still closer examination. 
