262 Annual Report of the Council. 



December aytli, 188S. 



"Letter on an accompanying photograph of his original drawing of the 

 solar surface." By James Nasmyth, P'.R.A.S., &c. 



January 8th, 18S9. 



" On the unification in the measure of time, with special reference to the 

 contest on the initial meridian." By C. Tondini de Quarenghi. 

 Communicated by V. J. Faraday, F. L. S. 



January 22nd, 18S9. 



'■'' Hyine720ptera Orieiitalis ; or Contributions to a knowledge of the 

 Hymenoptera of the Oriental Zoological Region." By P. Cameron. 

 Communicated by John Boyd, Esq. 



February 5th, 1889. 



" On the equation to the Instantaneous Surface generated liy the dissolu- 

 tion of an Isotropic Solid." By James Bottomley, D.Sc. 



February 19th, 18S9. 



"On the vitrified cement from an ancient fort." By G. H. Bailey, 

 D.Sc, Ph.D. 



" Notes on a form of Plaiitago viaritima [L.] new to this country, viz. f. 

 piimila (Kjellman)." By James Cosmo Melvill, F.L.S. 



March 5th, 1889. 



" Colour and its relation to the Structure of Coloured Bodies, being an 

 investigation into the Physical Cause of Colour in natural and 

 artificial bodies, and the Nature of the Structure producing it." Part I. 

 By Alexander Hodgkinson, M.B., B.Sc. 



March 19th, 1889. 



" On the results of some calculations with a certain class of figures." By 

 Charles Clay, M.D, 



" On the presence of green colouring matter in leaves found about 21 feet 

 under the surface in an excavation connected with the Ship Canal 

 Works." By William Thomson, F.R.S. Ed. 



" On Colour and its relation to the Structure of Coloured Bodies ; being 

 an Investigation into the Physical Cause of Colour in natural and 

 artificial bodies and the Nature of the Structure producing it. " Part II. 

 By Alexander Hodgkinson, M.B., B.Sc. 



April 2nd, 1889. 



" Note on the Propagation of Sound through an Atmosphere of Varying 

 Density." By Ralph Holmes, B.A. 



" On Colour and its relation to the Structure of Coloured Bodies ; being 

 an Investigation into the Physical Cause of Colour in natural and 

 artificial bodies and the Nature of the Structure producing it." 

 Part II., continued. By Alexander Hodgkinson, M.B., B.Sc. 



I 



