Contents. 



PLATES. 



I. II. To illustrate Professor Liveing's paper on the rocks of the 

 Channel Islands. 

 III. „ Professor Lewis's paper on measurements of a 



bead of platinum. 

 IV. — VIII. „ Professors Liveing and Dewar's paper on the re- 



versal of spectral lines of metals. 

 IX. „ Professor Liveing's paper on a spectrometer, &c. 



X. „ Professor Lewis's paper on a crystal of niiargy- 



rite and Mr Solly's crystallographic notes. 

 XL „ Mr Potter's paper on the junction of root and 



stem in the monocotyledonous plant. 

 XII. „ Mr Hillhouse's paper on the swelling of starch 



grains. 



