F. A. Perret — Lava Eruption of Stromboli. -±57 



Fig. 6. 



Fig. 6. Lava entering the sea. Photographed during a receding swell, to 

 show the formation of the protective sheath, in contact with which no 

 water is vaporized. 



Fig. 7. 



Fig. 7. Lava entering the sea. Showing development of high pressure 

 steam spiracles. 



