A book intended for organic chemists, food scientists, geo-chemists, materials science researchers, and entomologists. Since the publication of the first edition, natural product research technology has advanced through the fields of chemistry, food science, geochemistry, materials science, and entomology. Comparisons of these compounds in micro-organisms, algae, animals, higher plants and marine invertebrates are now documented. With the advent of such techniques as Raman spectroscopy, magic-angle spinning spectroscipy, high-resolution electron microscopy and X-ray crystallography, separation of isomers, positional isomers, regioisomers, stereoisomers, and even isotopic isomers are possible.