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ARNOLD The Motor and the Dynamo. 8vo. Pages VI + 178. 



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BENEDICT Elementary Organic Analysis. Small 8vo. Pages VI + 82. 

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BERGEY Handbook of Practical Hygiene. Small 8vo. Pages 164.. $1.50 



BILTZ The Practical Methods of Determining Molecular Weights. 

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BOLTON History of the Thermometer. I2mo. Pages 96. 6 Illus- 

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CAMERON The Soil Solution, or the Nutrient Medium for Plant Growth. 

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COLBY Reinforced Concrete in Europe. 8vo. Pages X + 260.... $3.50 



EMERY Elementary Chemistry, I2mo. Pages XIV -f 666. 104 Il- 

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ENGELHARDT The Electrolysis of Water. 8vo. Pages X -f 140. 90 

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OILMAN A Laboratory Outline for Determinations in Quantitative 

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GRAVES Mechanical Drawing. 8vo. Pages VI + 139. 98 Fig- 

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GUILD The Mineralogy of Arizona. Small I2mo. Pages 104. Il- 

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HALLIGAN Elementary Treatise on Stock Feeds and Feeding. 8vo. 

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HALLIGAN Fertility and Fertilizer Hints. 8vo. Pages VIII -f- 156. 12 

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HALLIGAN Soil Fertility and Fertilizers. 8vo. Pages X -f- 398. 23 

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HARDY Infinitesimals and Limits. Small I2mo. Paper. Pages 22. 

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HART Chemistry for Beginners. Small I2mo. Vol. I. Inorganic. Pages 

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HART Chemistry for Beginners. Small I2mo. Vol. II. Pages IV -f 

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