• % 



H CONTENTS. 





MISCELLANIES. DOMESTIC AND FOREIGN 



- 163 



Page. 



1. Travelling term of Rensselaer School, for 1830, with a no- 



tice of the nature of the Institution, - - 151 



2. Proceedings of the Lyceum of Nat. Hist, of New York, 159 



3. Notices communicated by Dr. Wm. Darlington, - . 160 



4. Chart of Long Island Sound, - 



5. Use of chloride of lime in the U. S. Navy, - - 164 



6. Use of chloride of lime in bleaching the pulp of rag9 pre- 



pared for making paper, - 166 



7. 8. Professor Hitchcock's lectures on diet, regimen and em- 



ployment — On frogs and toads in stone and solid earth, 167 

 9, 10. Character and description of a new species of Ulmus, 



with a plate — On the occultation of Aldebaran, - 179 



11, 12. Effect of certain mineral poisons on living plants — No- 

 tice of a Barn Swallow, - 172 



13, 14. New pyrophorus— Transactions of the Albany Institute, 173 



15. American Annals of Education and Instruction, and Journal 



of Literary Institutions, - 



16, 17, 18. American steel— Collection of colloquial phrases 



Culture of Silk, - 



* 



19. Protection for Steam Boilers, 



- 174 



- 175 



- 176 



CHEMISTRY. 



1. Sulphuric acid produced by the vapors of the Aix waters, 176 



2, 3, 4. Crystallization of barley sugar — Vegetable crystalliza- 



tion—Disinfecting powers of chloride of lime, 177 



5, 6. Impure salt in France— Theory of Voltaic electricity, 178 



MECHANICAL PHILOSOPHY. 



J 



10. Determination of metallicity, 



180 



181 



1. Shocks by the electric currents 



2. Elastic force of steam, 



3. Note on the fabrication of steel at Sheffield in Yorkshire, 



with a figure, -----__ 



4. 5. Hydrostatic balance — Hydrostatic press, - - 185 

 6, 7, 8. Extinguishment of fires in chimnies— Lightning rods 



Indian corn, - 



9. Heat lightning, 



182 



- 186 



- 187 



- 188 



