V \ W ^ \J__"Vi i-ii— A 



Fig. 34. — Magnification of a piece of fine ' MuUer's gauze ' used in tow-netting, showing 

 the organisms of the dwarf plankton or ' Nannoplankton,' which are minute enough 

 to pass through the invisible pores of the cloth, (/l/fer Lohmann.) 



