Vol. 61. Philosophical Magazine. Jan. 1823. 



— • — — > 



Contents of Number 297. 



I. On Animals receiving ' their Nutriment from Mineral Sub- 

 stances. By the Rev. W. Kirby, i\LA. F.R.S. F.L.S Page S 



II. Tliermometrical Experiments in ascertaining the Strength of 

 the Sun's Rays in a keen frosty Day, &c. &c. By Dr. W. Burney. 4 



III. On Aerial Navigation Q 



IV. On the Ornithorhynchus paradoxus or Mullingong, its ve. 

 nomous Spur, and general Structure. By Mr. Patrick Hill, Sur- 

 geon in the Royal Navy 8 



V. Observations on the Flexure of Astronomical Instruments, By 

 Mr. Thomas Tredgold, Civil Engineer 10 



VI. On certain Species of Carduug and Cnicus which appear to be 

 dicBcious. By Thomas Smith, Esq. F.R.S. & L.S H 



VII. On the Crystallization of Cast Iron. By Mr. David Mushet. 22 



VIII. On the Declination of the Fixed Stars. By Professor Bessel. 

 Sent from Konigsberg, 29th August 1822 25 



IX. A comparative Statement of some of the different Features in 

 Pillar Work and Way-going Work, in Coal-Mines. — On the Venti- 

 lation of Coal-Mines 30-32 



X. Observations on the Vinous Fermentation ; with a Description 

 of an Apparatus for the Improvement of the Process according to 



the Method invented by Madame Gervais 34 



XL A Defence of the New Theory of the Tides, in reply to Mr. 

 HE>fRY Russell's Observations. By Captain FoRMAff 42 



XII. Method of determining the Proportion of Carbonic Acid in 

 Mineral Waters 50 



XIII. On the Application of Potassium in Eudiometty. By Johx 

 Murray, F.L.S. M.W.S. &c 53 



XIV. True apparent Right Ascension of Dr, Maskelyne's 86 

 Stars for every Day in the Year 1823, at the time of passing the Me- 

 ridian of Greenwich, Calculated from Bessel's Tables of 1820. . . 53 



f^-^av- On the combined Action of Heat and Pressure on Water, 

 '>uii^ ^ther, and rectified Ojl of Petroleum. By the Baron 



DE LA Tour. ..,:..«. 58 



XV ■ tion of a Barometer for measuring Altitudes, con- 



structed ^Smciple of the Elasticity of included Air. By Johx 



M'Ir.a^ :^:w»S., «&c. i&rc 61 



•4* ^es: rtSQe^%ijg New -Books: Entomographia Ruthe- 



nu >fa .>,vJ'**'s of Pemfaical Works on Zootogy and Botany 63-68 



XVEfL "^"oceedings of Learned Societies 68 



XIX. r. -^ and Miscellaneous Articles, — Obituary. — Dis- 

 coveri^'" .hm interior of Africa.— Analysis of Lava from Vesuvius. 

 — The North-west Expedition --^jjiirhmary of Meteorological Obser- 

 vations for the year 1822.~List of New Patents — Meteorological 

 iable 70-80 



*Lj,* Communications for this Work, received by the Editors, 

 38, Slioe«i^pc, will meet with every attention. 



jRICUARa TAYLOR, PRINTER, SHOK-tANK, LOKDOV, 



