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NATURE SERIES 



THE SPECTROSCOPE AND ITS APPLICATIONS. 



By J. N. LOCKYER, F.R.S. With Illustrations. New 

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THE ORIGIN AND METAMORPHOSES OF 

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THE TRANSIT OF VENUS. By G. Forbes, B.A., 



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THE COMMON FROG. By St. George Mivart, 

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POLARISATION OF LIGHT. By W. Spottiswoode, 

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ON BRITISH WILD FLOWERS CONSIDERED IN 

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THE SCIENCE OF WEIGHING AND MEASURING. 

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HOW TO DRAW A STRAIGHT LINE : a Lecture on 

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LIGHT : A Series of Simple, Entertaining, and Useful 



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