c 



CONTENTS. 



NUMBER NINE. 



1. The Hessian Fly, 1 



2. Instinct and Reason, 27 



3. Operation of Nitrogen on Plants and Animals, 32 



4. On the Grasses, 35 



5. Long Island Farming, 45 



6. The Maple Family, 48 



7. Analysis of Soils, 50 



8. Mineral Food of Plants in the Soil, 52 



9. Notes on Natural History, 56 



10. Specific Character, 57 



11. Indelible Ink, . 59 



12. Geology of Vermont, 60 



13. Flora of the State of New York, 61 



14. An easy method of preparing Betuline, 63 



15. Miscellanies. — How to Keep Smoked Hams, 63 — Quinine 



in the Urine and Blood, 63 — Tinning and Zincing Brass or 

 Copper by the Moist Way, 64 — Force of Waves, 64 — To 

 Make Red Ink, 64 — Medicinal Substance in the Bark of the 

 Root of the Apple Tree and Wild Cherry Tree, 64— Method 

 of Covering Brass or Copper with Platina, 64. 



