IV CONTENTS. 



Page. 

 3, 4, 5. Method of preventing iron and steel from rusting — To 



make sealing wax — On the solvent power of hard waters, 150 



6. On the limits of vaporization, _ . - - - 151 



7. On the functions of vegetable life, - - - - - 153 



8, 9. Ammonia in native oxide of iron — Salicine, - - - 155 



10. 11. Malic acid — Manufacture of charcoal, _ - - 156 

 12, 13, 14. Potash obtained from felspar — Action of the pile on 



living animal substances — Chlorine an antidote to prussic 



acid, ---------- 157 



15, 16. Common salt a remedy for animal poison — Tenacity of 



vegetable life, -------- 158 



17, 18, 19. Precaution in planting potatoes — Preservation of trees 



from hares — Use of cotton in dressing wounds, - - 159 



NATURAL HISTORY. 



1, To blow eggs for preservation in cabinets, ^ - - 161 



2, 3. Killing large insects — Improved ornithological terms, 162 

 4,5. Touchwood — Habits of the crocodile, - - - - 163 

 6. Are the songs of birds innate or acquired? - _ - 164 



MECHANICAL PHILOSOPHY. 



1, 2. Prevention of the cracking of lamp glasses — On giving a 



fine edge to razors, lancets, &c. - - - - - 165 



3, Interesting optical experiments, ----- 166 



4, 5. Hardness of lead — Power of horses, - - - - 167 

 6. Composition of size for illuminators, artists, &c. - - 168 



STATISTICS. 



1. Yorkshire Philosophical Society, ----- 168 

 On the fructification of the Mosses, - - - - -' 171 



NOTICE OF JOURNALS, MEMOIRS, &.C. 



1. Journal of the Philadelphia College of Pharmacy, - - 173 



2. Say's American Conchology, 179 



3. 4. Prof Griscom's address to the Newark Mechanics Associa- 



tion — Gen. Cass's address before the Alumni of Hamilton 

 College, 180 



5, 6, 7, 8. Discourse on classical learning — Address at the open- 



ing of the Classical Hall at Brooklyn, and Discourse on 

 education—Address at the opening of a new edifice, for 

 the New York Dispensary — Method of acquiring a full 

 knowledge of the English language, _ _ _ _ 181 



9, 10. Southern Agriculturalist — Analysis of the mineral water 



of Saratoga and Ballston, &c. - - - - - 182 



11. Essays on some important ai tides of the Materia Medica, 184 



12. Franklin Institution of New Haven, - - - - 185 



13. Addresses of the Rev. Adam Sedgwick, - - - - 186 

 14, 15, 16, 17. American Botanical Register — Encyclopedia Ame- 



