Contents: 1. INTRODUCTION TO MICROBIOLOGY 2. HISTORY OF MICROBIOLOGY 3. GERM THEORY OF DISEASES 4. BACTERIAL CELL STRUCTURE 5. CHEMOAUTOTROPHY 6. PHOTOTROPHY . 7. BACTERIAL GENETICS 8. GENETIC RECOMBINATION 9. GENETIC RECOMBINATION BY TRANSDUCTION IN SALMONELLA 10. SOIL MICROBIOLOGY 11. MICROBIAL TRANSFORMATIONS OF CARBON 12. NITROGEN CYCLE 13. PHOSPHORUS CYCLE 14. SULPHUR CYCLE 15. BIOLOGICAL NITROGEN FIXATION 16. BIOFERTILIZERS 17. PHOSPHOBACTERIA AND MYCORRHIZAE 18. MICROBES IN HUMAN WELFARE 19. BIO PESTICIDES 20. SILAGE PRODUCTION