34 



Kilauca and Mauna Loa. 



around the pole of a magnet. Similar specimens were found in Vesuvius, but in 

 Kilauea onl^- this one localitj' has been discovered, and the specimens referred to are 

 (or were ) in the Museum of the Boston Society of Natural History. 



Another form of lava is found in narrow seams, and scattered over the ground 

 in places. I am inclined to attribute it to shrinkage cracking. 



FIG. 30. FRAGMKNTARY I.AVA. 



[412] 



