CONTENTS. 



NUMBER SIXTEEN. 



1. United States Coinage, 65 



2. Lime from Gas Works, 76 



3. Potato Disease, 77 



4. Blight in Fruit Trees, 79 



5. Meteorological Observations, 84 



6. Organic Matter of Soil, 92 



7. Wood's Class Book of Botany, 98 



8. Shade Trees not injured by Gas, 101 



9. Stramonium, 103 



10 Progress of Discovery, 103 



11. Capacity of soil to endure constant Cultivation, 104 



12. Practice and Theory, 104 



13. Hessian Fly, 105 



14. Improvement in Smelting Copper Ore by Electricity,. . . 106 



15. Cropping fallows, 108 



16. Wendell's Mottled Bigareau, Ill 



