VI CONTEXTS. 



Page 

 Captain W. Allen on the Construction of a Map of the Western portion 

 of Central Africa, showing the probability of the River Tchadda being 



the outlet of the Lake Tchad '. 99 



Mr. J. B. Pentland on the recently-determined Position of the City of 



Cuzco in Peru 99 



Lieutenant Lynch on the recent Ascent of the River Euphrates 99 



ZOOLOGY. 



Mr. J. HiNDMARSH on the Wild Cattle of Chillingham Park 100 



Lieut.-Colonel Sykes on a rave Animal from South America 104 



Rev. L. Jenyns on certain Species of Sovex 104 



Professor Owen on Marsupiata 105 



Dr. J. Richardson on Pouched Rats 105 



Mr. John Hancock's Remarks on the Greenland and Iceland Falcons ... 106 



Mr. Arthur Strickland on the Ardea Alba 106 



Mr. A. Strickland on a species of Scyllium taken on the Yorkshire Coast 107 

 Mr. T. Allis on the Toes of the African Ostrich, and the Number of Pha- 

 langes in the Toes of other Birds 107 



Dr. Edward Charlton on Tetrao Rakelhahn 107 



Mr. Edward Backhouse, Notice of the Annual Appearance on the Durham 



Coast of some of the Lestris tribe 108 



Mr. W. Yarrell on a New Species of Smelt from the Isle of Bute lOS 



Dr. Richard Parnell on some new and rare British Fishes 109 



Dr. P. D. Handyside on the Sternoptixiiiese, a family of Osseous Fishes... 110 



Messrs. W. H. Clarke and John Mortimer on a Fish with Four Eyes ... 110 



Mr. J. E. Gray on a new British Shell 110 



Mr. J. E. Gray on the Formation of Angular Lines on the Shells of cer- 

 tain Mollusca Ill 



Mr. J. E. Gray's Notice of the Wombat Ill 



Mr. J. E. Gray on the Boring of Pholades Ill 



Mr. E. Forbes on the Distribution of Terrestrial Pulmonifera in Europe... 1 12 



Rev. F. W. Hope's Remarks on the Modern Classification of Insects 11.3 



Rev. F. W. Hope on the Noxious Insects which have this year (1838) se- 

 riously injured the Apple Trees and Hops ,, 113 



Mr. J. A. Turner on a new Species of Goliathus and some Lucani, from 



the Coast of Africa 113 



Mr. T. P. Teale on the Gemmiferous Bodies and Vermiform Filaments of 



Actinese • 113 



Mr. G. B. SowERBY on certain Monstrosities of the Genus Encrinus 115 



Professor Ehrenberg's Notice of Microscopical Discoveries 116 



BOTANY. 



Professor Morren on the Production of Vanilla in Europe 116 



Mr. Charles C. Babington on the Botany of the Channel Islands 117 



Capt. J. C. Cook on the Genera Pinus and Abies 117 



Mr. G. B. SowERBY on Lycopodium Lepidophyllum 119 



Rev. W. HiNCKs on Vegetable Monstrosities 120 



Mr. Wallace's Account of an Inosculation observed in two Trees 120 



MEDICAL SCIENCE. 



Dr. BowEiNo's Observations on Plague and Quarantine, made during a 

 residence in the East 120 



Mr. GooDsiR on the Origin and subsequent Development of the Human 

 Teeth 121 



I 



