7 
= 
Trans. R. Dust. Soc. Serr. II. Vor. IX. Pirate XVII 
FIGURE 33. — Spec. 3369. Lower Essential Scoria (5 cm) (a) F 
FIGURE 34. — Spec. 336 : 
Erupt. Ap. 1906. Ottajano ~<1716 d- at Boe Borusaiue (a) Ore | 
<A om le 
FIGURE 35. — Spec. 3670. 2nd Essential Scoria (15 cm) (b) 
Erupt. Ap. 1906. Ottajano. <17'%6 d. 
72 
(FIGURE 36. — Spec. 3670. Same (b) ><80 d. 
FIGURE 37 
Spec. 3657. Essential Scoria (€) 
ate in erupt. of Ap. 1906. Slopes of Gt) 
«17% d. \ 
| 
