LIST OF ILLUSTRATIONS. 



Plates 1 to 13. Sir ANDREW NOBLK : Researches on Explosives. Part III. 



Plates 14 to 20. Lieut. -Colonel S. G. BURRARD on the Intensity and Direction of 

 the Force of Gravity in India. 



Plate 21. Mr. J. E. PETAVEL on the Pressure of Explosions. -Experiments on Solid 

 and Gaseous Explosives. Parts 1. and 11. 



