Berlese Funnel Test:

     The purpose of this multi-day test was to discover what kinds of organisms were inhabiting our soil. The end goal was to drive the little macroinvertebrates into a pool of ethanol over the course of several days using a heat lamp, where we could later inspect what has collected in the pool to learn about our soil's biodiversity. Dirt was placed in another bottle-funnel apparatus, 10 cm away from a heat lamp, and kept there for 5 days. When we went to analyze our results, it turned out that our filter had broken and some dirt had fallen in the ethanol pool. However, we proceeded regardless, but found nothing anyway. Apparently some dirt does not contain much life in the form for which we were searching, and ours did not come up with any.