Holiday, 16th January 1854. 



PAGE 



What is Coal? By Dr Fleming, . . . 216 



Monday, 6th February ISo-l. 



Observations on the Structure of the Torbanehill Mineral, as 



compared with various kinds of Coal. By Prof. Ben-nett, 21 7 



Monday, 20th February 1854. 



On certain Vegetable Organisms found in Coal from Fordel. 



By Professor Balfoue, . . . .218 



Monday, 6th March 1854. 



On the Impregnation of the Ova of the Salmonidae. By John 

 D.VVY, M.D., F.R.SS. Lond. & Edin., Inspector-General of 

 Army Hospitals, . . . . .219 



Account of a remarkable Meteor seen on 30th September 1853. 



By William Swan, Esq., .... 22U 



On the Mechanical Action of Heat. By W. J. M.vcqvorn 



Kankine, C.E., F.R.SS. Lond. & Edin., &c. . . 223 



Donations to the Library, . . . .224 



Monday, 20th March 1854. 

 On the Total Invisibility of Red to certain Colour-Blind Eyes. 



By Dr George Wilson, . . . .226 



Donations to the Library, . . . .227 



Monday, 3d April 1854. 



On a New Hygrometer, or Dew-Point Instrument. By Pro- 

 fessor CONNELL, ..... 228 



On the Stability of the Instruments of the Royal Observatory. 



By Professor Piazzi Smyth, .... 229 



Oij a General Method of effecting the substitution of Iodine for 

 Hydrogen in Organic Compounds, and on the properties of 

 lodo-Pyromeconie Acid. By Mr James Browtj, Assistant j^ 

 to TuoMAs Anderson, ...... 235 



Donations to the Library, ...... 236 



For continuation of Contnts, s^e page 3 of Cover. 



