CONTENTS. 



Art. I. On Fissiparous Generation. By Martin 

 Barry, M.D., F.R.SS.L. and E., M.W.S., 

 &c. With a Plate. Communicated by the 

 Author, .... Page 205 

 Fissiparous Reproduction of tlie Muscular Fibril, 214 



II. An Attempt to Explain the Leading* Pheno- 

 mena of Glaciers. By Professor Forbes, 

 Sec. F.R.S., &c., . . .221 



That Glaciers are semifluids is not an absurdity, 230 



The Motion of a Glacier resembles that of a Vis- 

 cous Fluid, . . . . •233 

 The Veined Structure of the Ice is a consequence 

 of the Viscous Theory, . . . 237 

 III. Abstract of a Paper on Wood-Paving". By D. 

 T. Hope, Esq., F.R.S.S.A., Civil Engineer, 

 Liverpool. Communicated by the Royal 

 Scottish Society of Arts, . . . 252 

 I. On the Position of the Fibre, . . 253 

 II. On the Durability of Wood as a Material for 

 Paving, . . . , . 255 

 III. On the Efficiency of Wood for Paving, when 



necessarily subjected to Wet and Dry Weather, 256 



V. On Traction on Wood Pavement, . . 258 



IV. Observations on some of the Decorative Arts 

 in Germany and France, and on the causes 

 of the superiority of these, as contrasted with 

 the same Arts in Great Britain. With sug- 

 gestions for the improvement of Decorative 

 ^_^rt. By Charles H. Wilson, Esq., 

 A.R.S.A., V.P.R.S.S.A. Communicated by 

 the Royal Scottish Society of Arts, . 259 



V. Remarks on Natural Terraces or Raised 

 Beaches observed in Scotland, particularly 



