NOTES ON THE IQ16 ERUPTION OF MAUN A LOA 481 



in height and from 50 to 200, or more, feet in the length of the 

 greater diameter, built of pumice, cinders, and spatter outfall — 

 these are also primary sources of flowing streams — -with many- 

 smaller cones and mouths intervening. The resemblances of these 

 cones and fissures, and their interrelationships, to features in 

 Iceland — especially along the great Laki fissure — -as described by 

 Geikie 1 and those from whom he drew, and as exhibited in the views 

 by Anderson reproduced by him, is very striking indeed; few would 









. 





Fig. 3. — A view looking north into the gash of the second largest cone of 1916, 

 situated a little south of the head of flow. Its character as a double semicone, built 

 of ejected products, and the channel of outflow from the gash are shown. This cone 

 is about 70 feet high. 



question that the course of action was similar in both regions 

 (see the photograph, Fig. 3, especially). Moreover, at prac- 

 tically all points along this segment lava welled out and flowed on 

 both sides of the open rift in southeast, south, or southwest direc- 

 tions down along the course of the fissure system and out along 

 narrow, jutting tongues of greater or less length, as well as down 

 the greater streams. One of these, the largest, led toward Kahuku 

 (see the photograph, Plate VI, d), and three others led toward 



1 Op. cit., II, 260-65, Figs. 292, 293. 



