1 YO J. D. Dana — History of Changes in Mt. Loa Craters. 



on the side toward the summit of Mt. Loa resulted in discover- 

 ing no great dikes or other signs of former dependence on Mt. 

 Loa. This evidence is not of great value, because the wall 

 now exposed to view may be far inside of the wall of the 

 greater original crater, just as the wall of the " lower pit " of 

 1840, which was in general without dikes, was inside of the 



corresponding wall of 1832 and 

 1823, and of the outer wall of 

 the crater for each of these per- 

 iods. 



3. The distance between the 

 craters of Mt. Loa and Kilauea 

 is about the same that exists be- 

 tween the other great volcanic 

 centers of the islands. But this 

 argument, urged by Mr. Green, 

 is indecisive, especially in view 

 of the small height of Kilauea. 



4. A new argument may be 

 derived from the relation of Kil- 

 auea to the two parallel ranges of 

 islands constituting the Hawai- 

 ian group. These ranges are 

 indicated on the accompanying 

 map by the lines connecting the 

 islands'. The northern or "Kea 



