I 



CONTENTS OF VOLUME EIGHTEENTH. 



HPage 

 EBERDEN, Wm., Jun. Effect of 



Cold on Health 1 



Hatchett, on Carynthian Molybdate of 



Lead 4 



Macdonald, Daily Variations of the Needle 



29, 355 



Outram, Singular Balls in a Tunnel 30 



Gray, on an Earthquake in England .... 31 

 Sewell, the Binomial Theorem demonstrated 33 

 Home and Menzies, on the Sea Otter .... 34 

 Pearson, on Ancient Metallic Arms, &c. 38 

 Herschel, on the Periodical Star « Herculis; 

 on the Rotation of Stars on their Axes, 

 and the Comparative Brightness of the 



Stars 6l 



Barker, Meteorological Register 64, 300, 443, 



580 

 Home, on" Blood extravas. in the Bladder 65 

 Correa de Serra, Fructification of the Sub- 

 merged Algas 68 



Home, Muscles and Cornea of the Eye . . 74 

 Huddart, on Horizontal Refractions .... 88 

 Mendoza, Problems of Nautical Astronomy 95 

 Cavendish, Correction of the observed Dis- 

 tance of the Moon and a Star 9^ 



Tennant, on the Nature of the Diamond . . Q7 



Marsham, on the Growth of Trees 100 



Pigott, Edw. on two Periodical Stars .... 102 

 Pearson, on the Gaz produced from Water 104 



Haighton, on Animal Impregnation 112 



Cruikshank, on the same subject 129 



Rumford, Donation for a Prize Medal. ... 137 

 R.S. Meteorological Journal 138, 315, 485, 666 

 Tennant, Action of Nitre and Gold, &c. . 138 

 Rumford, on the Force of Fired Gunpowder 140 



Herschel, Third Catalogue of Stars 171 



Vulliamy, on an Overflowing Well 184 



Herschel, on Jupiter's Satellites 187 



Brougham, on the Properties of Light. . . . 196 

 Wollaston, W. H. Gouty and Urinary 



Concretions 213 



Henry, on Carbonated Hydrogenous Gas 221 

 Wells, Experiments on the Colour of Blood 228 

 Williams, Mudge, Dalby, Trigon. Survey 236 

 Vince, Resistance of Fluids to Bodies. . . . 248 



Pearson, on Urinary Concretions 254 



Herschel, Satellites of the Georgium Sidus 270 

 Rumford, on Heat excited by Friction . . 278 

 Abernethy, Foramen Thebesii of the Heart 287 

 Hatchett, of the Sydneia, or Terra Australis 290 

 Shuckburgh, Standard Weights and Mea. 



sures ...»,,.....,,.,... 300 



VOL. XVIII. ; 



Page 

 Hellins, of a Slowly Converging Series . . 312 



Atwood, on the Stability of Ships 315 



Prevost, Reflexibility of Light 320 



Home, an Orifice in the Retina of the Eye 326 

 Wilson, Unusual Formation of the Heart 332 

 Latham, Wm., on Atmospherical Refrac- 

 tions 337 



Clark, a Tumour in the Human Placenta. . 338 



Wood, on the Roots of Equations 341 



Brougham, Theorems and Porisms in Geo- 

 metry 345 



Greville, on the Corundum Stone 356 



Rumford, Chemical Properties of Light . . 378 

 Cavendish, on the Density of the Earth . . 388 

 Hellins, a Prob. in Physical Astronomy 408,599 



Hatchett, Effects of the Mere of Diss 421 



Wilkins, Catalogue of Sanscrita MSS. 427, ^63 



Home, on the Structure of Nerves 430 



Vince, unusual Horizontal Refractions . . 436 



Home, on a Doubleheaded Child 443 



Corse, Manners and Habits of the Elephant 444 

 Crell, on Acid of Borax, or Sedative Salt 457 

 Lax, the Latitude by two Altitudes and the 



Time 466 



Herschel, a 4th Catalogue of the Stars .... 475 

 Correa de Serra, on a Submarine Forest . . 479 

 Home, Observations on Hermaphrodites. . 485 

 Rumford, (Count Rumford) on the Weight 



ascribed to Heat 496 



Knight, on the Fecundation of Vegetables 504 

 Corse, Species and Dentition of Elephants 509 

 Home, on the Teeth of the Elephant, &c. 519 

 Biggin, on the Tanning Principle and Gal- 

 lic Acid in Trees 527 



Wilson, Resolution of Algebraic Equations 529 



Tennant, on Lime for Agriculture 548 



Hatchett, Observations on Shell and Bone 554 

 Home, on the Membrana Tympani of the 



Ear 566 



Morgan, Contingent Reversions for 3 Lives 576 

 Herschel, Telescopic Penetration into Space 580 

 Carlisle, the Arteries of Slow moving Ani- 

 mals 601 



Young, Experiments on Sound and Light . 604 

 Cooper, the Membrana Tympani of the Ear 626 



Home, on the same subject 630 



Hulme, Spontaneous Light of Bodies .... ib 

 Biographical Notice of Dr. Nat. Hulme . . ib 

 Henry, Decomposing the Muriatic Acid . . 64 1 

 Howard, on a New Fulminating Mercury . 649 

 Wollaston, Wm. H. on Double Images by 

 Atmospherical Refraction 667 





