List of the Contributors. v 



Haddon, Alpeed C, M.A. page 



Description of an Apparatus for Demonstrating Systems 



of Classifications, &c., 200 



On the Generative and Urinary Ducts in Chitons (Plates 



X, and XI.), 223 



On a New Species of Halcampa {H. Andresii) from 



Malahide (Plate XVI.), 396 



On the Structure and Habits of Peachia hastata (Gosse) 



(Plates XVII. and XVIII.), 899 



Note on the Blastodermic Vesicle of Mammals, . . 536 



Hart, H. C, B.A. 



The Flora of the Wexford and Waterford Coasts, . . 117 

 On the Botany of the Eiver Suir, ..... 326 



Hartley, W. N., F.E.S.E. 



A Simple Method of observing Faint Lines with Diffrac- 

 tion Spectroscopes, ....... 206 



On the Colouring Matters employed in the Illuminations 



of the " Book of Kells," 485 



Haslajvi, a. E. 



On Volatilization of Zinc from German-silver Alloys, . 335 



Haughton, Eev. S., M.D., F.T.C.D., F.E.S. 



Eemarks on the Unusual Sunrises and Sunsets which 



characterised the close of the year 1883, . . . 203 



Hunt, A. E., M.A., F.G.S. 



On the Action of Waves on Sea-beaches and Sea-bottoms, 241 



JOLY, J., B.E. 



On an Apparatus for obtaining Telegraphically the Eead- 

 ings of Meteorological Instruments placed at a distance 

 from the Observer (Plates III. and IV.), . . . 158 



Notes on the Microscopical Character of the Volcanic 



Ash from Krakatoa (Plates XII. and XIII.) , . . 291 



On Photometers made of Solid Paraffin, or other Trans- 

 lucent Substance, 345 



