xliv FOURTH REPORT — 1834. 



Brisbane, Sir Thomas. Notice of Sand from New South Wales 

 for the manufacture of Glass. 



Notice of an Ephemeris of Halley's Comet by Mr. Rumker. 



Brown, Dr. On the Plurality of Embryos in Coniferce. 



Brown, Capt. On Pecten asperstis. 



Brunei. On the Construction of Arches without centering. 



Bryce, W. J. On certain Caves in the North of Ireland. 



Buckland, Rev. Dr. A Lecture on several remarkable Fossil 

 Fishes and Reptiles, delivered at an Evening Meeting 

 of the Association. 



Notice of a fossil Marine Plant from the Red Sandstone 



near Liverpool. 



Bushnan, Dr. On the detection of Worms in the Human 

 Veins. 



Challis, Rev. James. Theoretical explanations of some facts 

 relating to the composition of the Colours of the Spec- 

 trum. 



Christie, Professor. Description of a Meteorological Phfenome- 

 non. 



Christison, Professor. Action of Water on Lead. 



Clark, Dr. On the use of the Hot Air Blast in Iron-furnaces. 



Clarke, Dr. (deceased.) On the Ventilation of Hospitals. 



Cleland, Dr. On the Statistics of Glasgow. 



Dalyell, J. G. On the Propagation of Scottish Zoophytes. 



Dick, David. On the cementing the internal surfaces of Object- 

 glasses. 



On a new Suspension Railway. 



Dick, William. On the use of the Omentum. 



On the Elastic Tissue of animals. 



Observations on the Tongue of the Chamaeleon. 



Drake. On the Change of Colour in the Elder. 



Drinkwater, J. E. On the Origin of the Statistical Society of 

 London. 



Dunn, John. Description of a new Clinometer. 



Fitzwilliam, Earl. On the details desirable in Statistical Re- 

 ports relating to Agriculture. 



Forbes, Professor. On a new Sympiesometer. 



Graham, Professor. On Hydrated Salts. 



Grant. On Tables of Insurance. 



Graves, J. T. On Exponential Functions. 



Gilbertson, William. On Marine Shells of existing species at 

 various elevations near Preston. 



Gordon, Alex. On the construction and uses of Polyzonal 

 Lenses. 



Greenock, Lord. On certain Coal Tracts in Scotland. 



