CONTENTS. 



On the Decomposition of Water by Charcoal . , . . 305 

 Cases 'illustrating the Effects of Oil of Turpentine in ex- 

 pelling the Tape-tvorm 306, 335 



Description of a Camp Telegraph 321 



On the Penetration of Balls into uniform resisting Sub- 



stances 325 



A short Account of the Improvements gradually made in 

 determining the Astronomic Refraction . . . . 340, 446 

 Some Particulars respecting the Thunder-storm at London, 

 and in its Vicinity, on the 31 st of August 1810 . . 349 

 Researches on the oxymuriaticAcid, its Nature and Combi- 

 nations; and on the Elements of the muriatic Acid. With 

 some Experiments on Sulphur and Phosphorus, made in 

 the Laboratory of the Royal Institution . . 352, 404 



Of the Bogs in Ireland 361,437 



On purifying Olive Oil for the Pivots of Chronometers 372 



A further Set of Fifteen Corollaries, to the Musical 



Theorems in Page 3Q, by means of which, the Tempera-' 



men is of any one of the Concords being given, all the other 



Temperaments mid all the Wolves can be calculated with 



the greatest facility , 374 



On the Barometer 376, 467 



Theoretical Suggestions for the Improvement of Practical 



Surgery 401 



Memoir on the Diminution of the Obliquity of the Ecliptic, 



as resulting from ancient Observations 424 



Reply to Mr. M.'s Remarks on Mr. Smyth's Comparative 



Table in vol. xxxv. p. 488 .. 435 



Description of a Manometer, by means of which we may 

 ascertain the Changes which take place in the Elasticity 

 and in the Composition of a determinate Volume of Air 458 



Koticcs respecting New Books 75, 39 1 



Proceedings of Learned Societies 70, 152, 232, 392,469 

 Intelligence and Miscellaneous Articles 75, 154, 234, 308, 



394, 472 



List of Patents 78,159,238,318,399 



Meteorological Table . . . . 80, 160. 240, 320, 400, 473 



THE 



