vi 

 March 12, 1874. 



Page 



Contributions to the Developmental History of the Mollusca. Sections I., 

 II., III., IV. By E. Kay Lankester, M.A., Fellow of Exeter College, 

 Oxford 232 



On a New Deep-sea Thermometer. By Henry Negretti and Joseph Warren 

 Zambra. . 238 



March 19, 1874 



Preliminary Notice of Experiments concerning the Chemical Constitution 

 of Saline Solutions. By Walter Noel Hartley, F.C.S., Demonstrator of 

 Chemistry, King's College, London. 241 



Note on the Intracellular Development of Blood-corpuscles in Mammalia. 

 By Edward Albert Schafer 243 



On the Attractions of Magnets and Electric Conductors. By George Gore. 

 F.R.S - 245 



Spectroscopic Observations of the Sun. By J. Norman Lockyer, F.R.S., and 

 G. M. Seabroke, F.R.A.S. . , , 247 



March 26, 1874. 



On the Organization of the Fossil Plants of the Coal-measures. Part VI. 

 Ferns. By W. C. Williamson, F.R.S., Professor of Natural History in 

 Owens College, Manchester 248 



On the Motions of some of the Nebulae towards or from the Earth. By 

 William Huggins, D.C.L., LL.D., F.K.S 251 



On the Annual Variation of the Magnetic Declination. By J. A. Broun, 

 F.K.S .254 



List of Presents . . , 258 



On the Nervous System of Actinia. Part I. By Professor P. Martin Dun- 

 can, M.B. Lond,, F.R.S., &c. (Plates II. & III.) 263 



No. 152. April 16, 1874. 



On the Pneumatic Action which accompanies the Articulation of Sounds 

 by the Human Voice, as exhibited by a Recording Instrument. By W. 

 H. Barlow, F.K.S., V.P.Inst.C.E. . , , 277 



Note on the Periodicity of Rainfall. By J. H. N. Hennessey, F.K.A.S. . . 286 

 Studies on Biogenesis. By William Roberts, M.D., Manchester 289 



