CONTENTS. 



NUMBER TWELVE. 



1. Distribution of the Inorganic Matter in Vegetables 177 



2. Controversy respecting the Hessian Fly, 206 



3. Forest Trees of Massachusetts, 208 



4. Comparative View of Raising a Crop of Wheat in Eng- 



land and America, 216 



5. Experiment in Planting Potatoes 217 



6. Potato Disease, 218 



7. ' On the Best Mode of Feeding Cattle, 221 



8. Remarks on the Formation of Crystals of Argentiferous 



Galena, by Sublimation, , 227 



