DIRECTIONS TO THE BINDER FOR PLACING THE PLATES IN THIS YOLUiME. 



Plate I. 

 II. 



III. 



Illustrating Sir David Brewster's Paper on the Motion, Equilibrium, and 



Forms of Liquid Films, .... To face page 111 



} 



( Illustrating Mr John Scott's Paper on the Burning Mirrors of Archi- 

 medes, with some Propositions relating to the Concentration of 

 ( Light produced by Reflectors on different forms, 



123 



III.* Illustrating Professor Sir William Thomson's Paper on Vortex Motion, . 217 



IV. 



V. 



VI. 



VII. 



VIII. 



IX. 



X. 



XL 



XII. 



XIII. 



XIV. 



XV. 



XVI. 



XVII. 



XVIII. 



XIX. 



XX 



XXI. 



XXII. 



XXIII. 

 XXIV. 



XXV. 



XXVI. 

 XXVII. 



XXVIII 



XXIX 



XXX 



Illustrating Dr W. Carmichael M'Intosh's Paper on the Structure of the 



British Nemerteans, and some New British Annelids, . . 305 



Illustrating Professor Fleeming Jenkin's Paper on the Practical Appli- 

 cation of Reciprocal Figures to the Calculation of Strains on Frame- 

 work, ......... 441 



Illustrating Dr W. Lauder Lindsay's Observations on New Lichenicolous 



Micro-Fungi, ........ 513 



Illustrating Mr Alexander Buchan s Paper on the Mean Pressure of the 

 Atmosphere and the PrevailingWinds over the Globe, for the Months 

 and for the Year. Part II., ...... 575 



( Illustrating Professor Alexander Dickson's Paper on the Development of 

 3 the Flower of Pinguicula vulgaris, L., with Remarks on the Embryos 



) of P. vulgaris, P. grandiflora, P. lusitanica, P. caudata, and Vtri- 



\ eularia minor, . . . . . . . .639 



XXXI. Illustrating Mr David Milne-Home's Paper on the Boulder-Clay of Europe, (155 



VOL. XXV. PART II. 



