HOUSE MARK FOR A LINE OF TEACHING APPARATUS PRODUCTS, NAMELY, SCIENCE TEACHING AND ACTIVITY KITS FOR USE BY ELEMENTARY AND MIDDLE SCHOOLS CONSISTING PRIMARILY OF MAGNETS, THERMOMETERS, LABORATORY SUPPLIES, NAMELY, CHEMICALS, GLASS BEAKERS, TEST TUBES AND DROPPERS, TEST TUBE RACKS, CORK STOPPERS, RUBBER STOPPERS, FLASKS, ALCOHOL BURNERS, FUNNELS, STIRRING RODS, TUBING, LITMUS PAPERS, FILTER PAPERS, GOGGLES AND BRUSHES, SEEDS, AQUATIC PANTS AND ANIMALS, AQUARIUMS, TERRARIUMS, FISH, SNAILS, ALGAE, DAPHNIA, INSECTS, INSECT HABITATS, MEASURING, WEIGHING AND COUNTING DEVICES, NAMELY, MEASURING SPOONS, COMPASSES, SCALES, RULERS, CALCULATORS, BALANCES, CLOCKS AND WEIGHTS, PROTRACTORS, TEMPLATES, BLOCKS, PUZZLES, FLASH CARDS, PRISMS, BINOCULARS, MAGNIFIERS, MICROSCOPES, VIDEO SCOPES, MAGNIFYING SCOPES, AND MAGNIFYING GLASSES, SOLAR CELLS, LIGHT BULBS, BATTERIES, ELECTRIC MOTORS, WIRE, BOLTS, ROCKS AND MINERALS, ROCKETS, ASTRONOMY MODELS AND SUPPLIES, NAMELY, WIRE, SPHERES, TUBES, GLUE FASTENERS, AND INSTRUCTION CARDS, ANATOMY MODELS AND SUPPLIES, NAMELY, CHEMICALS, ELASTICS, PUMPS, PAPER, AND INSTRUCTION CARDS, WEATHER MEASURING INSTRUMENTS, BAROMETERS, MODELS, POSTERS, CHARTS AND GUIDES