152 



THE VOYAGE OF THE VEGA. 



[(HAP. 



For the science of our time, which so often places the origin 

 of a northern form in the south, and vice versa, as the foundation 

 of very wide theoretical conclusions, a knowledge of the types 

 which can live by turns in nearly fresh water of a temperature 

 of + 10°, and in water cooled to — 2°*7 and of nearly the same 

 salinity as that of the Mediterranean, must have a certain 

 interest The most remarkable were, according to Dr. Stuxberg, 

 the following: a species of Mysis, Diasti/lis Bathkei Kr., 

 Idothea entomon Lin., Idothea Sahinei Kr., two species of 

 Lysianassida, Pontoporeia setosa, Stbrg., Halimedon hrevicalcar 

 GoJis, an Annelid, a Molgula, Yoldia intermedia M. Sars, 

 Yoldia (?) ardica Gray, and a Solecurtus. 



EVERTEBRATE3 FROM PORT DICKSON. 



A. Yoldia arctica Gray. One and two-thirds of natural size. b. Dlastylis Rathkei Kr. 



Magnified three times. 



Driftwood in the form both of small branches and pieces of 

 roots, and of whole trees with adhering portions of branches 

 and roots, occurs in such quantities at the bottom of two well- 

 protected coves at Port Dickson, that the seafarer may without 

 difficulty provide himself with the necessary stock of fuel. The 

 great mass of the driftwood which the river bears along, 

 however, does not remain on its own banks, but floats 

 out to sea to drift about with the marine currents until 

 the wood has absorbed so much water that it sinks, or 

 until it is thrown up on the shores of Novaya Zemlya, the 



