CONTENTS OF VOL. XL 



NUMBERS LXIV. and LXV.— JULY, 1837. 



Page 



Mr. Peter Barlow on the Electro-magnetic conducting Power 

 of Wires of different Qualities and Dimensions, and Inquiry 

 into the Efficiency of the Galvanometer for determining the 

 Laws of its Variation 1 



Mr. Brooke on the Crystallographical Identity of Phacolite 

 and the Irish bipyramidal Levyne with Chabasie 12 



Rev. J. B. Reade on the Existence of Structure in the Ashes 

 of Plants, and their Analogy to the Osseous System in Ani- 

 mals 13 



Mr. R. C. Taylor's Notes relating to the Geology of a Portion 

 of the District of Holguin in the Island of Cuba, and the 

 Mineral Region on the North-east Coast, from the Observa- 

 tions of himself and Thomas G. Clemson, Esq 17 



Lieuts. W. E. Baker and H. M. Durand on the Fossil Jaw of 

 a gigantic Quadrumanous Animal allied to the genera Sem- 

 nopithecus and Cynocephalus 33 



The late Dr. Turner's Chemical Examination of the Colour- 

 ing Matter of the Green-sand Formation 36 



Rev. R. Murphy's Remarks on an Error of M. Fourier in his 

 Analyse des Equations 38 



Prof. J. R.Young's Investigation of Formulae for the Summa- 

 tion of certain Classes of Infinite Series 4-1 



Dr. T. Thomson on the Right Rhombic Baryto-Calcite, with 

 reference to Prof. Johnston's Paper in the Phil. Mag. for May 

 1837 45 



Sir Edw. Ff. Bromhead's Remarks on the present State of 

 Botanical Classification 48 



Mr. Prideaux's Observations on the Deduction of the Dew- 

 point from the Indications of the Wet-bulb Thermometer, 

 and on the Detection of minute Quantities of Foreign Mat- 

 ters diffused in the Atmosphere, with Notices of Apparatus ; 

 in a Letter to Mr. Brayley 54 



Prof. Forbes's Account of "some Experiments made in dif- 

 ferent Parts of Europe, on Terrestrial Magnetic Intensity, 

 particularly with reference to the Effect of Height 58 



Mr. Beke's Additional Remarks on the former Extent of the 

 Persian Gulf, and on the Distinction between Babel and 

 Babylon 6(5 



Mr. C. Binks on some of the Phaenomena and Laws of Action 

 of Voltaic Electricity, and on the Construction of Voltaic 

 Batteries 68 



Proceedings of the Royal Society 89 



Geological Society 98 



Zoological Society 118 



Royal Irish Academy 131 



a 2 



