The Water Pollution Slide

Includes:1(d). Intestinal bacteria (Escherichia coli) from putrid water2(e). Putrefactive bacteria (Spirillum) from sludge poor in oxygen3(d). Putrefactive bacteria (Sphaerotilus) bacteria, forming long chains4(d). Sludge bacteria (Methanobacterium) causing sewer gas5(d). Sulphur bacteria (Thiocystis)6(c). Wasserbluthe (Microcystis), blue-green alga "blooming" in stagnant water7(c). Anabaena, blue green algae, in eutrophic water8(c). Spirogyra, filamentous green alga in nutrient-rich water9(d). Spirulina, corkscrew-shaped algae occurring in bitter seas10(c). Chlamydomonas, one-celled green alga in eutrophic water11(c). Cladophora, green alga from moderately polluted water12(c). Diatoms, mixed algae from scarcely polluted water13(c). Euglena, green flagellates occurring in stagnant eutrophic water14(d). Ciliates, different species from nutrient-rich water15(d). Rotifers (Rotatoria), small animals from putrid water16(d). Tubifex, freshwater oligochaete, living in the sludge17(d). Carchesium, stalked ciliate from moderately polluted water18(d). Water mold (Saprolegnia), harmful to plants and animals19(d). Skin of fish injured by chemicals, t.s.20(d). Skin ulcer of an amphibian, t.s.Unit of MeasureSet of 20 pcs.