18. 
April 4. 
CONTENTS. 
PAGE 
General Monthly Meeting 7 . . 225 
General Monthly Meeting . : . 227 
1853. 
. Proressor Farapay — On the Magnetic Force . 229 
Proressor Witt1amson — On Gerhardt’s Discovery 
of Anhydrous Organic Acids 7 . 239 
G. B. Arry, Ese.,- Astronomer Royal—On the 
Results of recent Calculations on the Eclipse of 
Thales and Eclipses connected with it . . 243 
General Monthly Meeting : : . 250 
. Dr. Joun Tynpatt —On the influence of Material 
Aggregation upon the manifestations of Force - 254° 
. Proressor G. G. Stokes — On the Change of Re- 
frangibility of Light, and the Exhibition thereby of 
the Chemical Rays . 259 
. Joan Wutson, Ese.— On Ploughs and Phonshing 
Ancient and Modern = . 265 
. Epwarp A. Freeman, Esa.—On the Canatradees 
Principles of the Principal Styles of Architecture . 268 
W. Srevenson, Esq.— Letter on Aurore Boreales 274 
General Monthly Meeting : - 276 
. Joun Puiturrs, Ese.— Geological Susie round 
Ingleborough : ° : . 278 
Sir C. Lyrrzt — On the discovery of some Fossil rep- 
tilian remains, and a Land-shell in the interior of an 
erect fossil-tree in the Coal measures of Nova , 
Scotia ; with remarks on the origin of Coal-fields, 
and the time required for their formation . 281 
General Monthly Meeting : . 288 
Rev. W. Taytor — Observations on different Modes 
of Educating the Blind A . 290 
. Tuomas H. Huxtry, Ese.— On the Identity of Struc- 
ture of Plants and Animals . 3 . 298 
. Dr. Jonn Conotty — On the Past and Present Con- 
dition of the Insane. (No Abstract.) . . 303 
