INDEX. 



Meteorological Stations and observers _ 



Meteorological Observatory at Montreal ._ . 



Meteorology of Trinidad ^ 



Operations during 1856 



Mexican Boundary Survey, by Maj. Wm. II. Emory ^ _. 



]\Iitla llemains in Mexico, Mayer's Paper on _ 



MuUer, Baron, Magnetic Observations by _ _ 



Miiller, Dr. John, Eeport on Electricity, (see Eleclricily) 



Museum, additions during 185G _ 



distribution and use of specimens in - 



General Remarks by the Secretary 



increase of. _. 



present condition of (1857) ._ 



in Patent Office, removal proposed 



Natural History, Directions for Preserving Specimens, (see Directions) 



Natural History, Special Collections Proposed... 



Nebraska, Explorations in _ . 



Observatory at Montreal, Description of 



Officers of the Institution 5 



Oology, Account of Work on.. _. 31 



Page, Captain J. T. , Expedition by 5.> 



Patterson, Robert, Report on Plionography 280 



Phonography, Report on . 277 



Physics, Lectures on, by Professor Henry 187 



Introduction _ 187 



Definition of Science . 187 



Cause 188 



Methods of investigation. _ 188 



Application of induction and Deduction ._ 189 



Theories, Hypotheses, &c 190 



Somatology, or the General Properties of Bodies 192 



Extension 193 



Impenetrability- _ 193 



Figure - 191 



Divisibility 194 



Porosity and Compressibility 195 



Dilatability 196 



Mobility.. 196 



Inertia 197 



Attraction and Repulsion - 199 



Physical Forces - 199 



Attraction of Gravitation ... 200 



Electrical and Magnetic Attraction and Repulsion. - 202 



Attraction of Cohesion and Adhesion 202 



Phenomena of Adhesion 204 



Molecular Repulsion 205 



Molecular Constitution of Matter — 206 



Atomic Theoiy of Boscovicli 207 



30 s 



