Tfcti. C:$ 



facinl tissues supported in a shallow wire dish formed frorr/ vindow 

 screen. The screen dish and its tissue paper filter are then placed 

 in a covered petri dish containing just enough water to keep the 

 tissue wet. Very few, if any, of the nematodes are poured through 

 the tissue, but once in the petri dish where conditions for aeration 

 and locomotion are ideal, the nemas work through the tissue and 

 screen to the water beneath. Most of the nematodes will be in water 

 of the petri dish by h hours, but routinely a 21; hour time is 

 allowed for convenience and for maximum removal of nematodes. Tests 

 have shown this procedure to be superior to use of the Baermann 

 funnel in cleanliness of the sample, numbers and viability of the 

 nematodes, and rapidity. 



