CONTENTS. 



MISCELLANEOUS INTELLIGENCE. 

 I. Mechanical Science. 



Pa(?e 



1 Singular case of Inverted Vision 469 



2 Fissures of Glass 470 



3 Change of Crystalline State in 



a Solid Body ib. 



4 Hardening of Steel by a Cur- 



rent of Compressed Air ib. 



Page 

 6 Tinning of Cast Iron Weights 47U 



6 Temperature of the Planetary 



Space 471 



7 Mr. Watt's Solar and Lunar 



Compasses iL. 



II. Chemical Science. 



1 On the Conducting Power of 



Bodies for Heat, and on a 

 new Instrument called a 

 Thermometer of Contact... 472 



2 On a Method of Measuring 



many Chemical Actions 473 



3 On the formation of Fulgo- 

 rites, or Lightning Sand 

 Tubes 474 



4 Preparation of HydriodicAcid 



Gas '. 475 



5 Test for Nitric Acid, and its 



combinations ib. 



6 On the decomposition of Am- 



monia, by the Metals 476 



7 Preparation of liquid Ammonia 477 



8 Solubility of certain Substan- 



ces in Sulphuric Acid ib. 



9 On the Presence of Columbi- 



um as well as Titanium in 

 Iron Slag 478 



10 On Electrical Phenomena pro- 



duced by Pressure, and the 



Cleavage of Crystals ib. 



Electricity due to Cleavage. 479 



1 1 On the Velocity of Sound in 



Water 480 



12 Extraordinary Experiments 



on Heat and Steam 481 



13 Iodides of Carbon 482 



14 Method of discovering Potassa 



by the Blow-pipe Flame . .. 483 



1 5 New Variety of Borax 483 



16 On the Chloride of Lime, or 



Bleaching Powder 484 



17 On a Gaseous Fluoride of 



Manganese 486 



18 Boniretoflron 487 



1 9 Decom position of Salts of Cop- 



per ib. 



20 Discovery and Separation of 



Antimony from Lead, Cop- 

 per, &c 488 



21 Singular Action of Arsenic 



Acid on Sugar ib. 



22 Preparations of Chromic Acid ib. 



23 Solubility of Corrosive Subli- 



mate in ^Ether and Alco- 

 hol by Camphor 489 



24 Method of preparing Ammo- 



niuret of Silver, (fulminat- 

 ing Silver) ib. 



25 Bromide of Gold ib. 



26 Peculiar compound of Pla- 



tina with Oxygen and Car- 

 bon ib. 



27 Composition of Carbazotic 



Acid ib. 



28 On Chevreul's Acid of In- 



digo 490 



29 Artificial formation of Urea ... 49 1 



30 Identity of Asparagine with 



Ageodoite 492 



III. Natural History. 



1 Dependance of Sight upon the 



Optic Nerves 492 



2 Innocuous Nature of Putrid 



Exhalations ib. 



3 Detection of Blood 497 



4 Globules of the Blood 498 



6 Growth of Hair ib. 



6 Stammering ib. 



7 Communication of Disease by 



Leeches 499 



8 Preservation of Leeches ib. 



9 St. Helena Silk ib. 



10 Migration of Butterflies ib. 



Meteorological Table for March, April, and May 



1 1 Nature of those Gelatinous 

 Substances supposed to fall 

 from the Atmosphere 500 



12 Ancient Olives and Oil disco- 

 vered at Pompeii ib. 



13 Effect of Electricity on pointed 

 Leaves, &c. and on Vegeta- 

 tion 501 



14 Echites Suberecta, or Savana 

 Flower of Jamaica 502 



15 Height of Mont Blanc ib. 



16 Water Spout 503 



504 



