IX 



Page 



On the Limit of Solar and Stellar Light in the Ultra-violet Part of the 

 Spectrum. By William Huggins, D.C.L., LL.D.,-F.R.S 544 



List of Presents 544 



April 11, 1889. 



BAKERIAN LECTURE. A Magnetic Survey of the British Isles for the 

 Epoch January 1, 1886. By A. W. Riicker, M.A., F.R.S., and T. E. 

 Thorpe, B.Sc., Ph.D., F.R.S 546 



Experiments on the Nutritive Value of Wheat Meal. By A. Wynter 

 Blyth 549 



List of Presents.... .. 554 



Second Series of Results of the Harmonic Analysis of Tidal Observations. 

 Collected by G. H. Darwin, LL.D., F.R.S., Fellow of Trinity College 

 and Plumian Professor in the University of Cambridge 556 



The Structural Arrangement of the Mineral Matters in Sedimentary and 

 Crystalline Pearls. By George Harley, M.D., F.R.S 612 



Obituary Notice : 



Dr. Parkinson , i 



Index v 



