IV 



No. 332. February 1, 1894. 



Sight and tin- 1 Mining Power of Composite Eyes. Bv A. 



MjJloek 85 



\-tion of Heat upon Ethylene. By Vivian B. Lewes... 9<> 



An Instrument for grinding Section-platen and Prisms of Crystals <.f 

 Artificial Preparations accurately in the desired Directions. By A. 

 I Tutton. Assoc. R.C.S., Demonstrator of Chemistry at the Royul 

 College of Science, South Kensington... 108 



An Instrument of Precision for producing Monochromatic Light of any 

 desired Wave-length, and its Use in the Investigation of the Optical 

 Properties of Crystals. By A. E. Tutton, Assoc. R.C.S., Demon- 

 strator of Chemistry at the Royal College of Science, South Ken- 

 sington Ill . 



On Hollow Pyramidal Ice Crystals. By Karl Grosamaun, M.L>., 

 F.RC.S E., and Joseph Lomas", A.RC.Sc 113 



List of Presents 115 



February 8, 1894. 



Further Observations on the Organisation of the Fossil Plants of the 

 Coal -Measures. Part I. Catamites^ Calamostachys, and Spli>-i">- 

 phyllum. By W. C. Williamson, LL.D., F.R.S., Emeritus Professor 

 of Botany in the Owens College, Manchester, and D. H. Scott, M.A., 

 Ph.D., F.L.S., F.G.S., Honorary Keeper of the Jodrell Laboratory, 

 Royal Gardens, Kew 117 



Researches on the Germination of the Pollen Grain and the Nutrition 

 of the Pollen Tube. By J. Reynolds Green, M.A., B.Sc., Professor 

 of Botany to the Pharmaceutical Society of Great Britain 124 



List of Presents 128 



February 15, 1894. 



On certain Ternary Alloys. Part VIII. Alloys containing Aluminium, 

 Cadmium, and Tin ; Aluminium, Antimony, and Lead ; or Aluminium, 

 Antimony, and Bismuth. By C. R. Alder Wright, D.Sc., F.R.S., 

 Lecturer on Chemistry and Physics in St Mary's Hospital Medical 

 School 13.> 



< )n the Photographic Arc Spectrum of Iron Meteorites. By Professor 

 I. Norman Lockyer, C.B., F.R.S 13i> 



On the Straining of the Earth resulting from Secular Cooling. By 

 Charles Davison, M.A., Mathematical Master at King Edwards 

 High School, Birmingham .. 141 



i lifinical Analysis of the Meteoric Stone found at Makariwa, near 

 Invercargill, New Zealand, in the year 1886. By L. Fletcher, M.A., 

 F.R.S., Keeper of Minerals in the British Museum 142 



I.i>t of Presents 14(> 



February 22, 1894. 



BAKERIA* LECTURE. On the Relations between the Viscosity (Internal 

 Friction) of Liquids and their Chemical Nature. By T. E. Thori* -. 

 D.S&, F.R.S., and J. W. Rodger, Assoc. R.C..S .' 148 



I.i-t of Present* ... 15ft 



