CONTENTS. 



II. Chemical Science. 



Page 



1 On the Specific Heat of Gases 200 



2 On the Incandescence & Light 



of Lime ..., 201 



3 ^Evolution of Heat during the 



Compression of Water .... ib. 



4 On Electrical Excitation .... ib. 



5 Magnetic Repulsion 202 



6 Diminished Solubility of Sub- 



stances by Heat - ' 



7 Composition of Cyanic 



8 lodous Acid 



9 Manganesic Acid .... 



10 Heavy Muriatic Ethe 



Chloric Ether ... tu. 



11 Test for the Presence of Nitric 



Acid .205 



12 Peculiar Formation of Nitre .. ib. 



13 Experhnents on Fluoric Acid 



and Fluates ib. 



14 Crystallization of Phosphorus. . 206 



15 Solution of Phosphorus in Oils ib. 



16 On the Inflammation of Powder, 



when struck by Brass 207 



17 Cementation of Iron by Cast 



Iron ib. 



18 On the Preparation of Ferro- 



prussiate of Potash ib. 



19 Sulphocyanide of Potassium in 



Saliva 208 



20 Decomposition of Sulphate of 



Copper, by Tartaric Acid . . ib. 



21 Separation of Arsenic from 



Nickel, or Cobalt 209 



Page 



22 Chemical Researches into Cer- 



tain Ancient Substances . . 209 



23 Compounds of Gold 210 



24 On the Bitter Substance pro- 



duced by the Action of Ni- 

 tric Acid on Indigo, Silk, 

 and Aloes ""' 



25 On thp ^--- ; . 



1 oi wme 215 



"28 Test of the Presence of Opium ib, 



29 Denarcotized Laudanum .... ib. 



30 Extraction of Morphia from Dry 



Poppy Heads 216 



31 Preparation of Morphia ib. 



32 Easy Method of Obtaining Me- 



conic Acid . . . . , 217 



33 On a New Vegetable Acid . . ib. 



34 Altheine, a New Vegetable 



Principle ib, 



35 Rheine, a New Substance from 



Rhubarb 218 



36 On Dragon's Blood, and a New 



Substance which it contains ib. 



37 Purification of Madder 219 



38 On Indigo, and Indigogene . . 220 



39 On the Mutual Action of 



Ethers, and other Substances 221 



40 Faraday's Chemical Manipu- 



lation . ib. 



III. Natural History. 



1 On the Supposed Influence of 



the Moon 222 



2 Luminous Appearances in the 



Atmosphere ib. 



3 On the Determination of the 



Mean Temperature of the 

 Air ...• 223 



4 Indelible Writing ib, 



6 Peculiar Crystals of Quartz . . . ib. 

 . 6 Native Iron not Meteoric .... 224 



7 Native Argentiferous Gold. .. . 225 



8 Protheeite, a New Mineral. . . . 226 



9 Volcanic Bisulphuret of Copper ib. 



10 Fall of the Lake Souwando, in 



Russia 227 



11 Vegetable Torpor in the Root 



of the Black Mulberry Tree 228 



12 Method of increasing the Odour 



of Roses ib. 



13 Pine Apples ib, 



14 Mode of Condeasin^ Vegetable 



Substances for Ship's Provi- 

 sions .....: 229 



15 Rewards for the Discovery of 



Quinia, and for Lithotrity... ib, 



16 Upon the Gaseous Exhalations 



of the Skin 230 



17 Effects of Galvanism in Cases 



of Asphyxia by submersion- ib. 



18 Recovery from Drowning 231 



19 Preservation of Cantharides ... ib. 



20 Chloride of Lime in cases of 



Burns ih. 



21 Cure of Nasal Polypi. 232 



22 Bite of the Viper ib. 



23 Experiments on the Poison of 



the Viper ib, 



24 Destruction of Moles ib, 



25 On growing Salad Herbs at 



Sea 233 



26' Chinese Method of Fattening 



Fish 234 



