CONTENTS. 



m 



Page 



32 Artificial production of Ultra- 



marine ib. 



33 On an economical Method of 



dissolving Metals in Acids in 

 the Manufacture of certain 

 Metallic Salts 217 



34 Infusible Crucible 219 



35 Sugar of Liquorice ib. 



36 On the Preparation of Tannin 220 



37 Vegetable Gelatine, and Albu- 



men > 221 



Page 



38 Preparation of Pi peri ne 221 



39 Substitute for the Sulphate of 



Quinia 222 



40 Citric Acid from Gooseberries ib. 



41 Nature of Aloetic Acid, or the 



Bitter of Aloes 223 



42 Preparation of Gallic Acid. . ib. 



43 Volatilization of Alcohol ib. 



44 Concentration of Alcohol by 



Animal Membrane 224 



45 Formation of Adipocire 225 



III. Natural History. 



1 Mean Height of the Inhabit- 



ants of Paris, &c 220 



2 Effects of the Tincture of Col- 



chicum Autumnale on the 

 System ib. 



3 Gouty Inflammation cured by 



Vaccination 227 



4 Effect of Chlorine in Chronic 



affections of the Lungs ib. 



6 Sting of a Wasp ib. 



6 On Insects inclosed in Copal., ib. 



7 Reproduction and use of 



Leeches ... 228 



8 Red Viper of Dorsetshire ib. 



9 Destruction of Grasshoppers' 



Eggs 229 



10 Loss in weight of Meat during 



cooking ib. 



11 Living Giraffes in Europe ... ib. 



12 Easy Method of preserving 



small Birds ib. 



13 German Method of procuring 



Flowers in Winter ib. 



14 Chinese Method of Planting 



Branches 230 



15 On a Plant living entirely in 



the Air ib. 



10 Culture of Aquatic Plants in 



China 231 



17 Benzoic Acid in the Grasses., ib. 



18 Eradication of Meadow Saffron ib. 



19 Native Arseniuretted Iron ... ib. 



20 Muriate of Ammonia in Tur- 



kistan 232 



21 New Minerals containing Se- 



lenium ib, 



22 Common Salt on the Coast of 



Chili ib. 



23 Fall of an Aerolite and accom- 



panying Phenomena 233 



24 Meteor exhibiting a peculiar 



Green Colour " ib. 



25 On the ascent of the Jung 



Frau ib. 



26 Active ]\Iolecules in Organic 



and Inorganic bodies 235 



Meteorological Table for June, July, and August 



236 



