CONTENTS {continued). 



December 12, 1872. 



• PAGE 



I. A Contribution to the Knowledge of Haemoglobin. By E, Eay Lankestee, 

 M. A. Oxon., Fellow of Exeter College, and Eadcliffe Travelling Fellow of 

 the University. (Plate I.) 70 



II. On the Structural Composition of Urinary Calculi. By H. Vandyke 



Caetee, M.D. Lond » ,81 



III. Researches in Spectrum- Analysis in connexion with the Spectrum of the 



Sun. — No. I. By J. Noeman Lockyeb, F.E.S 83 



December 19, 1872. 



I. Magnetical Observations in the Britannia and Conway Tubular Iron Bridges. 



By Sir Geoeg-e Bilvdell Aiey, K.C.B., P.E.S., Astronomer Eoyal . . 85 



II. On the Organization of the Fossil Plants of the Coal-measures. — Part IV. 

 Dictyoxylon, Lyginodendron, and Heterangium. By W. C. Williamson, 

 F.E.S. , Professor of Natural History in Owens College, Manchester . . 86 



III. Observations on the Temperature of the Arctic Sea in the neighbourhood of 



Spitzbergen. By John C. Wells, Capt. E.N 91 



List of Presents 98 



TAYLOE AND FEANCIS, EED LION COUET, FLEET STEEET. 



