hay infusion (def'n, organisms)
- a culture made from water collected from a pond, lake, stream, or puddle
- If you look carefully and examine pond water without culturing it, you will probably find the protozoa are somewhat difficult to find because thy are not present at high density. To increase the protozoa density, make a hay infusion by putting the water in an open jar and adding cut dried grass or hay
-Paramecium Aurelia and Vorticella (attatched to individual plant fibres).