VI CONTENT*. 



Page. 

 Mr. J. E. Bowman on the Longevity of the Yew, and on the Antiquity of Plant- 

 ing it in Churchyards 101 



Dr. G. Lloyd's Abstract of Observations on the Marsiliacees 102 



Mr. Thomas Bridgin Teale's Abstract of a Paper on Alcyonella Stagnorum.... 104 

 Dr. John Hancock on a nevF and scandent Species of the Norantia, or Ascium 



of Guiana 104 



Dr. C. Daubeny's Notice of Experiments, now in progress at Oxford, on the Ef- 

 fects produced by Arsenic on Vegetation 104 



Professor Royle on Caoutchouc 105 



Mr. G. Webb Hall on the Acceleration of the Growth of WTieat 106 



Professor Henslow's Notice of Crystals of Sugar found in Rhododendron pon- 



ticum 106 



Lieut.-Col. Sykes on the Fruits cultivated and Wild, of the Deccan, in the East 



Indies 106 



Dr. S. RooTSEY, on Sugar, Malt, and an Ardent Spirit extracted from Mangel 



Wuizel 107 



Mr. Phelps on the Formation of Peat (illustrated by specimens) 107 



Dr. Corbet on Imbibition of Prussiate of Potash by Plants 107 



MEDICAL SCIENCE. 



Dr. J. C. Prichard on the Treatment of some Diseases of the Brain 107 



Dr. James O'Beirne's Abstract of an impublished Work on Tetanus 109 



Sir D. Brewster on the Cause, the Prevention, and the Cure of Cataract Ill 



Mr. R. Carmichael on the Nature and Origin of Cancerous and Tuberculous 



Diseases 112 



Dr. James Macartney on the Structure of the Teeth, vrith an Account of the 



process of their Decay 115 



Dr. Robert D. Thomson on the Chemistry of the Digestive Organs 117 



Dr. Robert Reid's Exposition of the Functions of the Nervous Structure in the 



Human Frame 119 



Dr. Carson on Absorption 119 



Mr. Augustus F. A. Greeves on the Gyration of the Heart 120 



Mr. John Walker on the Functions of the Muscles and Ner\'es of the Eyeball.. 121 

 Dr. W. F. Montgomery's Notice of a newly-discovered Peculiarity in the Struc- 



ture of the Uterine Decidua, or Decidua Vera 121 



Dr. John Houston's Account of Human Twin Foetuses, one of which was de- 

 void of Brain, Heart, Lungs, and Liver ; -with Observations on the Nature and 



Cause of the Circulation in such Monsters 122 



Mr. R. Adams on the Pathological Condition of the Bones in Chronic Rheuma- 

 tism 123 



Mr. R. Adams on the state of the new Circulating Channels in the case of double 



PopUteal Aneurism 123 



Sur David J. H. Dickson's Case of extensive Aneurism of the Arteria Innomi- 

 nataand Thoracic Aorta 124 



