Essential Biology: Covers all important aspects of biology: structure of living things, chemistry of life, energy from food, digestion, gaseous exchange, transport in animals and plants, how plants make food, removing waste, the senses, how the body fights disease, skeletons and movement in animals, human reproduction, asexual reproduction, plant reproduction, genetics, evolution, growth and life cycles, ecology, cycles in nature, conservation, the light microscope, classification, biological keys, experiments, indicators and tests, measurement and units, advances in biology, and the development of life on earth. Out of print, but included in this book.

Essential Chemistry. Covers all important aspects of chemistry: elements, mixtures, and compounds, atomic structure, the periodic table, the air, bonding, metals, chemical reactions, reduction and oxidation, resources, electrolysis, corrosion, acids, bases, and salts, the mole, water, energy changes, rates of reaction, nitrogen, sulphur and chlorine, organic chemistry, alkanes and alkenes, polymers, alcohols, the problems of the chemical industry, nuclear power and radiation, the reactivity series, solubilities and separation, practical experiments, gases in the laboratory, table of elements, chemistry who's who, laboratory apparatus, drawing and labeling apparatus, crystals, and common acids, metal compounds and alloys.