CONTENTS, iil 



Page 



3. On Pyrophosphoric Acid and the Pyrophosphates . .167 



4. Production of Hydrocyanic (Prussic) Acid, under uncommon circum- 



stances (A. A. Hayes) . . . . 169 



5. Action of Chlorine on Carburetted Hydrogen, Alcohol, and Ether, 



(Morin) ..... ib. 



6. Bromide of Carbon . . . . , ib. 



7. Preparation of Phosphuret of Lime (Dr. Coxe) . . 173 



8. Iodide of Potassium a good Test for Arsenic curious Compound pro- 



duced . . . . . ib. 



9. Ammonia in Native Oxide of Iron (Boussingault) . 174 



10. Atomic Weight of Titanium (Rose) . . .175 



11. On the Crystallization of Gold (Professor Henslow, of Cambridge) 176 



12. Salicine its power as a Febrifuge (Leroux) . . 177 



13. Preparation and Composition of Malic Acid . .178 



14. Ulmin, or Ulmic Acid, and Azulmic Acid . . 179 



15. On Caseum and Milk (Braconnot) . . . .181 



16. Manufacture of Charcoal .... 184 



17. Potash obtained commercially from Felspar . . . ib. 



18. Sale of Selenium . . . . ib. 



III. NATURAL HISTORY, &c. 



1. Mechanism of the Human Voice in Singing . . .185 



2. Globules in the Humours of the Eye . . . ib. 



3. Use of Nitrogen in Respiration Cyanogen in the Blood . . 186 



4. Action of the Pile on Living Animal Substances . ' . ib. 



5. On the Disorders arising from the long-continued Use of Iodine (Dr. 



Jahn) ...... 187 



6. Chlorine an Antidote to Hydrocyanic Acid . . . 188 



7. On the Cure of Animal Poisons, and probably Hydrophobia, by the 



local Application of Common Salt (Rev. J. Fischer) . 189 



8. On Restoration from Drowning by Insufflation of the Lungs . 190 



9. Surgical Recovery of an Eye . .. . . 191 



10. On the Means of improving both the Quality and Quantity of Wool 



(M, Petri) . . . . .192 



11. Vision of Birds of Prey (Dr. J.Johnson) . . ib. 



12. New Species of British Snake . . . .193 



13. On the Existence of An imalcula in Snow (Dr. Mure) . . ib. 



14. Antipathy of the Chameleon to Black . . . 194 



15. Phosphorescence of the Sea in the Gulf of St. Lawrence . . ib. 

 J6. Rending of Timber by Lightning , . ,195 



