CONTENTS. 



Pago 

 Art. I. The Glacial Theory and its recent progress. By 

 Louis Agassiz, Doctor of Philosophy and Medi- 

 cine; LL.D. of Edinburgh and Dublin; Knight of 

 the Order of the Red Eagle of Prussia; Professor 

 of Natural History in the Academy of Neuchatel. 

 Communicated by the Author. With a Plate, 217 



I. The Erratic Phenomenon — 



1. The phenomena proper to the interior of valleys, 221 



2. The Dispersion of Erratic Blocks in Plains, at great 



distances from their Origin, . . • S26 



3. Parallel Terraces, .... 236 

 II. Researches on Existing Glaciers, . . . 240 



Mode of Living on the Glacier, . . . 278 



II. On the Occurrence of Platina and Diamonds in 



Borneo, ...... 284 



III. On some Peculiar Changes in the Internal Struc- 



ture of Iron, independent of, and subsequent to, the 

 several processes of its manufacture. By Charles 

 Hood, Esq., F.R.A.S., &c. ... 286 



IV. On a Re-arrangement of the Molecules of a body 



after solidification. By Robert Waringtox, Esq. 292 



V. On a new method of Illuminating Church Clocks. 

 By Mr R. Bryson, Edinburgh. Communicated by 

 the Royal Scottish Society of Arts, . ^ 293 



VI. On the Mechanical Arts of Persia. By James Ro- 

 bertson, Esq., Civil and Mining Engineer, Edin- 

 burgh, late in the service of the Shah of Persia. 

 Communicated by the Royal Scottish Society of 

 Arts. With a Plate, .... 296 



