Titlebook: Limits of Life; Proceedings of the F Cyril Ponnamperuma,Lynn Margulis Conference proceedings 1980 D. Reidel Publishing Company, Dordrecht,

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words. Since the end of the 18th century, scholars of antique Roman Law thus had to deal with the dangers of adhering to legal texts from an utterly different period of time, meant for an utterly different society. Consequently, Pandectism has often been accused of having created a law detached from

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The Gas Vacuole: An Early Organelle of Prokaryote Motility?,self appears to be highly conserved among the various groups of bacteria, it seems doubtful that the regulatory mechanism to control its synthesis could be the same for the diverse gas vacuolate bacterial groups.

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Physical Chemistry and Evolution of Salt Tolerance in Halobacteria,c effects, ribosomes in halobacteria show marked preference for potassium over sodium ions. To ensure the proper intracellular ionic composition, powerful ion transport systems have evolved in the halobacteria, resulting in the extrusion of sodium ions and their replacement by potassium. It is likel

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Sulphur Isotope Ratios in Late and Early Precambrian Sediments and Their Implications Regarding Earof information about very early sediment deposition environments and early life. Recent carbon and sulphur isotope data for the low grade metamorphosed banded iron-formations of the Michipicoten area in Ontario (2.7 b.y. old) provide strong evidence for the existence of autotrophic organisms and red