CONTENTS. 



On the Luminous appearance of Sea Water. . . , . 206 

 Defence of Professor Leslie against the Edinbtirgh Re- 

 view 208 



Description of a Machine for pumping IVater used in the 



East 220 



On the Substitution of the Oxymuriate of Magnesia for 



that of Lime ^ in the Process of Bleaching, &c. .. 226 



Observations intended to show that the progressive Motion 



of Snakes is partly perjormed by means of the Ribs. 24 1 



An Attempt to analyse Cast Iron 245 - 



Researches respecting the Action of Benzoates with the 



earthy and metallic Salts 258 



On some Combinations of Platina. . . 209, 263, 350 

 Further Experiments and Observations on the Action of 



Poisons on the Animal System 278 



On Variations in the Vibrations of Pendulums. . . 293 



Reply to a Letter of Dr. Marcet to Dr. Bostock, on the 



Subject of the Alkali in the Animal Fluids. . . 321 



Of such Portions of a Sphere as have their Attraction eX' 



pressed by an algebraic Quantity 326 



On the Differential Thermometer 329 



Tabular Corrections for the Rise and Fall of the Meicury 



in the common Barometer 33Q 



On Tests for Arsenic 332 



On the Vibrations of Musical Strings ; with a Mode of 

 ascertaining the Sound producible by any given Number 



rf Vibrations 333 



Additional Experiments on the Muriatic and Oxymuriatic 



Acids 337 



Letter from Mr. John Stancliffe to Mr. James Allan, 

 respecting Mr. Allan's improved Dividing Engine. 343 



On the Motions of the Tendrils of Plants 345 



Cu^e of Femoral Hernia, with some Peculiarities y success- 

 fully treated by an ()perolion. 365 



An easy Method of forming all Kinds of Ovalsy commonly 

 known by the Name of Gardeners' Ovals 367 



