VI CONTENTS. 



NUMBER v.— MAY. • ''■°*' 



Mr. Moseley on a new Application of the Method of Parameters to the 



Determination of certain Curves 321 



Mr. Scanlan on a Volatile Oil, possessing peculiar Properties, obtained 



from Soap Ley 326 



M. Vauquelin on a new Variety of Wolfram, or Tungstate of Iron 328 



Mr. Stephens on the Influence of Chemistry on the Affairs of Life 333 



Prof. Sedgwick on the Classification of the Strata which appear on the 



Yorkshire Coast 33g 



Mr. Horner's Reply to Mr. Herapath 3(53 



Mr. Nixon on the Accuracy of the Measurement of Heights by One 



Barometer 363 



Col. Beaufoy's Astronomical Observations 367 



Dr. Henry's Analysis of a crystallized Compound of Hyponitrous and Sul- 

 phuric Acids , 3C8 



Rev. Mr. Powell's Historical Sketch of Photometry, with Remarks 371 



M. Berzelius on Isomorphism as affecting Chemico-Mineralogical Sys- 

 tems 381 



Analytical Account of Dr. Turner's Work on the Atomic Theory 386 



Proceedings of the Royal Society 39O 



_ . Royal Institution 39O 



Astronomical Society 39I 



Geological Society 392 



Analysis of the Soot from a Wood Fire 394 



Analysis of Lamp-black 395 



Alkaline, digestive Lozenges 395 



Mr. Howard's Meteorological Journals ^ 397 



NUMBER VI.— JUNE. 



Mr. George's Experiments on the Colouring Matter of Lac, and on its 

 Application to the Dyeing of Scarlet 401 



Mr. Major on English Books of Naval Architecture 405 



Mr. Horner on the Use of continued Fractions with unrestricted Nume- 

 rators in Summation of Series 4l6 



Col. Beaufoy's Astronomical Observations 422 



M. Berzelius on Isomorphism as affecting Chemico-Mineralogical Sys- 

 tems {concluded) 422 



Rev. Mr. Vernon on the Strata North of the Humber, near Cave. (With 

 a Plate.) 43o 



Report of the Committee appointed by the Council of the Astronomical 

 Society, for the Purpose of examining the Telescope co.istructed by Mr. 

 Tully, by Order of the Council 440 



Mr. Barlow on the Magnetic Effect induced in Iron during the Act of 

 Rotation. (With a Plate.) 444 



