Vlll 



PaKe 



On the Gastric Gland of Mollusca and Decapod Crustacea : its Struc- 

 ture and Functions, By C. A. MacMunn, M.A., M.D. Communi- 

 cated by Dr. M. Foster, Sec. RS 436 



On the Structure and Affinities of Matonia pectinata, R Br., with an 

 Account of the Geological History of the Matonineoe. By A. C. 

 Seward, F.E.S., University Lecturer in Botany, Cambridge 439 



Note on a new Form of Light Plane Mirrors. By A. Mallock. Com- 

 municated by Lord Eayleigh, F.E.S 440 



Meeting of March 16, 1899, Croonian Lecture delivered, and List of 

 Papers read 443 



On Transmission of Proteosoma to Birds by the Mosquito : a Report to 

 the Malaria Committee of the Eoyal Society. By Dr. C. W. Daniels. 

 Communicated by -Dr. M. Foster, Sec. RS., by direction of the 

 Malaria Committee 443 



Obituary Notices : 



Thomas Jeffery Parker i 



Percival Frost vii 



Lord Playfair ix 



Brigade-Surgeon James Edward Tierney Aitchison xi 



Mr. Osbert Salvin , , xiii 



John Hopkinson xvii 



Index . xxv 



