MARINE BIOLOGICAL STATION AT PORT ERIN. 



77 



voyage, not only to make a collection of scientific value, 

 but also to obtain a fresh supply every day of most 

 interesting living organisms for examination with the 

 microscope. 



Fig. H. — Kiel Plankton Microscope, with large mechanical stage, &c. 



The further investigation of the material so collected 

 brings us to microscopic and chemical work in a scientific 

 laboratory, which it is not the purpose of this little Gruide 

 to describe. 



We shall now pass the various groups of marine 

 animals in review, beginning with the lowest and working 

 up to the fishes. 



