英文。又一本图文并茂的超文本生物学教科书。全部下载共计28M。从分子到机体，内容非常好。
Line Biology Book: Table of Contents
INTRODUCTION: THE NATURE OF SCIENCE AND BIOLOGY (REVISED 6/21/01)
CHEMISTRY I: ATOMS AND MOLECULES (REVISED 6/18/01)
CHEMISTRY II: WATER AND ORGANIC MOLECULES (REVISED 6/18/01)
CELLS I: ORIGINS (REVISED 6/18/01)
CELLS II: CELLULAR ORGANIZATION (REVISED 6/18/01)
TRANSPORT IN AND OUT OF CELLS (REVISED 6/24/01)
CELL DIVISION: BINARY FISSION AND MITOSIS (REVISED 6/21/01)
CELL DIVISION: MEIOSIS AND SEXUAL REPRODUCTION (REVISED 6/21/01)
LAWS OF THERMODYNAMICS (REVISED 6/20/01)
REACTIONS AND ENZYMES (REVISED 6/20/01)
ATP AND BIOLOGICAL ENERGY (REVISED 6/18/01)
CELLULAR METABOLISM AND FERMENTATION (REVISED 6/21/01)
PHOTOSYNTHESIS (REVISED 6/24/01)
INTRODUCTION TO GENETICS (REVISED 6/21/01)
GENE INTERACTIONS (REVISED 6/21/01)
DNA AND MOLECULAR GENETICS (REVISED 6/20/01)
HUMAN GENETICS (REVISED 6/21/01)
PROTEIN SYNTHESIS (REVISED 6/22/01)
CONTROL OF GENE EXPRESSION (REVISED 6/21/01)
PLANTS AND THEIR STRUCTURE (REVISED 6/21/01)
PLANTS AND THEIR STRUCTURE II (REVISED 6/21/01)
FLOWERING PLANT REPRODUCTION: Flower Structure (REVISED 6/22/01)
FLOWERING PLANT REPRODUCTION: Fertilization and Fruits (REVISED 6/22/01)
PLANT HORMONES AND NUTRITION (REVISED 6/22/01)
ANIMAL CELLS AND TISSUES (REVISED 6/18/01)
ANIMAL ORGAN SYSTEMS AND HOMEOSTASIS (REVISED 6/18/01)
THE INTEGUMENTARY SYSTEM (REVISED 6/21/01)
THE CIRCULATORY SYSTEM (REVISED 6/18/01)
LYMPHATIC SYSTEM AND IMMUNITY (REVISED 6/21/01)
THE DIGESTIVE SYSTEM (REVISED 6/18/01)
THE NERVOUS SYSTEM (REVISED 6/22/01)
THE ENDOCRINE SYSTEM (REVISED 6/20/01)
THE REPRODUCTIVE SYSTEM (REVISED 6/24/01)
THE MUSCULAR AND SKELETAL SYSTEMS (REVISED 6/21/01)
THE RESPIRATORY SYSTEM (REVISED 6/24/01)
THE EXCRETORY SYSTEM (REVISED 6/21/01)
DEVELOPMENT OF EVOLUTIONARY THEORY (REVISED 6/20/01)
THE MODERN VIEW OF EVOLUTION (REVISED 8/8/01)
PALEOBIOLOGY: FOSSILS AND TIME (NEW 9/27/01)
PALEOBIOLOGY: THE PRECAMBRIAN: LIFES GENESIS AND SPREAD (NEW 9/27/01)
PALEOBIOLOGY: THE EARLY PALEOZOIC (NEW 9/27/01)
PALEOBIOLOGY: THE LATE PALEOZOIC (NEW 9/27 /01)
PALEOBIOLOGY: THE MESOZOIC, AGE OF CYCADS AND DINOSAURS (NEW 9/27/01)
BIOLOGICAL DIVERSITY: CLASSIFICATION (REVISED 6/20/01)
BIOLOGICAL DIVERSITY: VIRUSES (REVISED 6/18/01)
BIOLOGICAL DIVERSITY: BACTERIA AND ARCHAEANS (REVISED 6/18/01)
BIOLOGICAL DIVERSITY: PROTISTS: STEM EUKARYOTES (RE