CONTENTS. 



NUMBER TEN. 



1 . The Limestones, and Lime, 65 



2. Progressive Changes of Matter, 83 



3. The Farmer's Calling, 90 



4. Mr. Duropus and Family, 94 



5. Worn out Lands of Virginia and North Carolina, 101 



6. Harrowgate Springs, 102 



7. Salisbury's Seedling Pear, 103 



8. Publications, 104 



9. Thick Sowing vs. Thin Sowing, 104 



10. Correspondence, 105 



11. Agricultural College, 107 



12. Strictures on the views of Dr. Seller, • 108 



13. Value of Non-conductors of Heat, Ill 



14. Agricultural Address, 112 



15. Manna, 112 



16. The Fat of Milk, 112 



17. Exchange Journal, 112 



18. Acknowledgements, 112 



