;iv 



CONTENTS, 



MISCELLANEOUS INTELLIGENCE. 



I. Mechanical Science. 



Page 



1 Transparent Watch 191 



2 On the Elastic Force of Vapour 



at high Temperatures ib, 



3 On the Motion of Currents in 



Liquids 194 



4 On the Expansive Force of 



Freezing Water ib. 



5 New Hygroscope 195 



Page 



6 Adhesion of Metals 196 



7 Effect of Solar Light upon 



Magnets ib, 



8 Non-interference of different 



Electric Currents 197 



9 Heated Air used in Iron Fur- 



naces 19s 



10 Preservation gf Corn in Siloes 199 



II. ChemicAl Science. 



Page 



1 Preparation of Bromine and its 



Hydrate. — Hydrate of Bro- 

 mine 199 



2 Detection of Iodine 200 



3 Preparation of Hydriodic Ether ib. 



4 Chloride of Phosphorus and 



Sulphur ib. 



5 On the Effect of Ammonical 



Gas upon Heated Metals .... ib. 



6 Flviid in the Cavities of Rock 



Salt 202 



7 On the Formation of Steel by 



■ means of Silica 203 



8 Analyses of various Cast Irons 



and Steels ib. 



9 On Artificial Crystals of Oxide 



of Iron 204 



10 M. Becqnerel on Metallic Sul- 



phuretSjIodites, and Bromides 205 



Page 



11 Preparation of Pure Oxide of 



Cobalt 203 



12 Properties of Cobalt ib. 



13 Preparation and ' Properties of 



the Bi-iodide of Mercury. ... ib. 



14 On a new Compound of Mer- 



cury 209 



15 Reduction of Nitrate of Silver. 210 



16 On some Properties of Silver. . ib. 



17 Purple Precipitate of Silver... 211 



18 On the Action of Alkalies on 



Organic Bodies ib. 



19 Preparation of Formic Acid, . ib. 



20 Pelletier on a new Vogeto-alkali ib. 



21 Buccina: new principle in Box- 



wood 212 



22 On certain Double Compounds 



of the Muriates of the Vegeto» 

 alkalis ib. 



III. Natural History. 



Page 



1 Method of obtaining the Skele- 



tons of small Fishes 213 



2 Physiological Phenomenon pro- 



duced by Electricity. , 214 



3 Ossified Brain 215 



4 New Medicinal Substance. ... 216 



5 Population of Wales ib. 



6 Use of the ClJorides of Lime 



and Soda in cases of Plague, ib. 



Page 



7 Fecundity of the \\\^r 218 



8 Use of Sulphate of Soda instead 



of Salt for Sheep and Cattle ib. 



9 Alimentary Tubercle of Van 



Diemen's Land ib, 



10 Effects of Li^ht on Vegetation ib, 



1 1 Luminous Points in the Hori- 



zon 219 



