CONTENTS. 



MISCELLANEOUS INTELLIGENCE. 



I. Mechanical Science. 



Page 



1. Eccentricity of Saturn's Ring 161 



2. Resistance in Space to the 

 Motions of Heavenly Bodies ib. 



3. New Method of measuring the 



Power of Telescopes . . .162 



4. Brown's Active Molecules . ib. 



5. Force of Running Water . . ib. 



6. Geological Hammer . . . 163 



7. Cement for Hard Stones, Por- 



celain, and Glass . . . ib. 



8. On the Structure of Metals ib. 



9. On the Solidiacation of Plaster 167 



Page 



10. Formula for reducing a Mercu- 

 rial Thermometer in high Tem- 

 peratures 168 



11. Determination of the Mathema- 



tical Law, according to which 

 the Elastic Force of Steam in- 

 creases with the Temperature ib. 



12. Destruction of Vermin in Ships 



by Steam 169 



13. Preservation of Butter . .170 



14. On the Dilatation of Stone . ib. 



15. New Artificial Horizon . . 171 



II. Chemical Science. 



1. Application of a high Tempe- 

 rature to the Evaporation of 

 Liquids 



2. On the specific Heat of Gases 



3. Artificial Preparation of Ice 



4. Odoriferous Lamp . 



5. Electricity of the Solar Rays 



6. Atomic Weights of Iodine and 



Bromine 



7. Chloride and Iodide of Nitrogen 



8. Action of Iron on Ammonia . 



9. Effect of Muriatic and Sulphuric 



Acid on Hydrocyanic Acid . 



10. Phosphorus in Vacuo . 



11. On the composition of Phosphu- 



retted Hydrogen 



12. Combustibility of Carbon in- 

 creased by Platina and Copper 



13. Carbazotic Acid and Carbazo- 



tate of Lead .... 



14. Decomposition of Sulphates in 

 Water by Organic Matters 



15. Instantaneous Light Apparatus 



16. On the Analysis of Borax 



17. Sulphuret of Silicium . . 



18. On the Production of Artificial 



Ultramarine .... 



19. Adulteration of Chromate of 



Potash ; its Detection . • 



20. Sympathetic Ink 



21. On the Detection of small 



Quantities of Mercury . 



22. On the Coloration of Golden 

 Articles of Jewellery . . 



Berzelius's Analysis of Platina 

 Ores 184 



On the Specific Gravity of 

 Alloys, &c 185 



On a peculiar Principle in 

 Blood, &c 187 



Preparation of Hartshorn Jelly 188 



Braconnot's Indelible Ink . ib. 



Preparation of Morphia, without 

 the use of Alcohol . . .189 



On Vegetable Jelly or Pectic 

 Acid ib. 



GlaucicAcid 191 



On the Formation of Acids in 

 Vegetables ib. 



Plumbagine, a new Vegetable 

 Substance 192 



Preparations of Oil in different 

 Oleaginous Plants . ib. 



Colouring Matter of Lichen 

 Rocella ib. 



Bark of the Soap Tree . .193 



Chemical Analysis of Green 

 Oranges ib. 



Chemical Analysis of the Mine- 

 ral Waters of Gastrin . .194 



Analysis of Ipecacuanha Branca, 

 Root of the Viola Ipecacuanha 



Chemical Examination and Ana- 

 lysis of the Flowers and Leaves 



of Yarrow 195 



Researches respecting Platina 196 



Crystallization of Sulphatedlron 197 



ib. 



