IV CONTENTS. 



PAGE 



V I. Experiments and Observations on Visible Vibration. By 



Charles Tomlinson, Esq., continued 124 



VII. Pdrification of Pyroligneous Acid and Manufacture of 



Acetate of Lime according to the Method adopted by 

 Chemical Manufacturers. By Chr. Phil. PrUckner of Hoff 133 



VIII. Analyses of Books 142 



1. Optical Investigations By G. H. S. Johnson, M. A. . ib. 

 Optical Investigation ; Caustics. By the Same . . . ib. 



2. Coloured Impressions of Engravings from the Natural 

 History of Animalcules. By Andrew Pritchard, Esq. 

 London, 1835 143 



3. On the Action of Voltaic Electricity, on Alcohol, Ether, 

 and aqueous Solution By Arthur Council, Esq. . . ib. 



IX. Scientific Intelligence 145 



1. Proceedings of the Ashmolean Society of Oxford . . ib. 



2. Application of Hot Air in the Smelting of Iron . . .151 



3. Action of Muriate of Ammonia upon some Sulphates 

 and upon Silver 152 



4. Phosphate of Quinine 153 



5. Pectic Acid ib. 



6. Cases of Poisoning in France '. 154 



7. Dilatation of the Metals by Heat ib. 



8. Aldeide, and a New Acid 155 



9. On the Evaporation of Charae ib. 



10. Composition of Goat Fat 156 



11. Chemical Nature of the Secretions .... , . ib. 



12. Esculic Acid 158 



13. New Yellow Dye for Wool ib. 



14. Horary Observations of the Barometer. &c. for 36 hours 



on the 22d and 23d of June last. By the Rev. John Wallace 159 



15. Meteorological Journal for June. By Ditto . . . 160 



No. IX. — September. 



I. On Racemic Acid. By Thomas Thomson, M. D., continued 161 



II. On the Number and Character of the Colours that enter into 



the Composition of White light. By P. C, continued 172 



III. Proceedings of the British Association for the Advancement 



of Science 186 



1. Section of Geology and Geography 188 



2. Ditto Chemistry and Mineralogy 195 



3. Ditto Mathematics and Physics 206 



4. Subsection of Mechanical Science applied to the Arts . 219 



5. General Meetings 224 



6. Address of Professor Hamilton ib. 



7. Dr. Lardner on Steam Carriages 230 



8. Professor Powell on the theory of the dispersion of light 232 



9. Mr. Whewell on the phenomena of the Tides . . . 233 



10. Professor Babbage on the age of Peat Mosses . . . ib. 



11. Speech of the Rev. Vernon Harcourt ib. 



12. Professor Babbage on a Whirlpool at Cephalonia . . 235 



IV. Scientific Intelligence 236 



1. Live Toad found embedded in Stone, By A. Pollock Esq. ib. 



