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Silk-producing Insects of West Africa
THE following observations in connection with the wild silk-producing insects of West Africa may be considered of interest. In parts of Nigeria...
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The Exhibition of Fishes in Museums
THERE are at least four museums in the United States in which collections of fishes are exhibited “in which the specimens are presented without the...
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Über das Wasserstoff aktivierende System von Hydrogenomonas H16
In cell-free extracts of Hydrogenomonas H 16 , the hydrogenase activity is found in two fractions which can be separated by centrifugation at 100000 g...
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Polarographic studies of murexide—I
Reduction of murexide at the drop** mercury electrode was investigated. Data obtained at different concentrations in the range 0·5-2 mM showed that...
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Vitality of Leaves
I HAVE in my possession a sprig of Bryophyllum calycinum which was cut off a plant in Jamaica six months ago, at the beginning of June. It has still...