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Contents of July Number.—Problems in ‘the 1 iology. of Aquatic Plants, 
ringed EF Se a to the Periodicity of ce Vegetation by. F. 
Ph. D.Se. (wit art and Table). = ee “ot Stauropteris, ‘by. 
D. a Scott, F.R.S. “(illustrated). The Soil Sy Sand-dun 
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oplement te Topographical Botany, Bd. a 
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