R. Mallet-—Mechanism of Stromboli. + 201 
able explanation of their rhythmical action given by Bunsen 
and Des Cloizeaux. He then points out that Stromboli presents 
more especially the statement that the bottom of the crater is 
about 2000 feet above the level of the sea, are corrected—the 
author's levels being derived from approximate barometric 
measurements, The author then refers to the old traditions 
still current as to connections in the way of cause and effect 
between the phenomena of the volcano and those of weather, 
ete. He points out that the explanation previously given of 
