Excursion in a village pond. - 10 prepared slides in box

59-5430 Excursion in a village pond 59-5430/1 Bacteria (Spirillum), smear from stagnant water 59-5430/2 Blue-green alga (Oscillatoria), w.m. of filamentous alga 59-5430/3 Infusoria, living from bacteria, mixed forms w.m. 59-5430/4 Animal plankton (Crustacea), living from infusoria, w.m. 59-5430/5 Carp (Cyprinus), liver of fish, t.s. 59-5430/6 Tadpole, larva of frog, swimming tail t.s. 59-5430/7 Frog (Rana), intestine with villi, t.s. 59-5430/8 Duck (Anas), down feather, w.m. 59-5430/9 Waterweed (Elodea), t.s. of aquatic stem 59-5430/10 Water lily (Nymphaea), floating leaf with air chambers, t.s.