Animals 
27 
The magnificent Marno of Hawaii 
{Drepanis pacified) was destroyed 
about fifty years ago. 
Again, the existence of certain 
mammals living in the water or on 
land is increasingly threatened by 
trade. Ferdinand v. Richthofen says\- 
Though the cruel lust for slaughter 
has long ago succeeded in reducing 
the numbers of marine mammalia to an 
alarming extent, and has even utterly 
exterminated some of the noble species, 
yet the task of fishing near the 
surface of the ocean has remained a 
laborious and dangerous one. The 
trawl — originally an instrument of 
capture used by zoologists alone — has 
grown to its present gigantic propor- 
tions, and is even used for deep-sea 
fishing. This systematically sweeps 
^ Richthofen, Ferd. Frhr. v. Das Meer und 
die Kunde vom Meer. Akademische Festrede, 
Berlin, 1904, S. 31. 
