D. K.D.\'ii>i.nsk.Si:i.sk.Skr., nati nv.or, math. Aid. VIII. 4 |Th.Thoiiki;i.ssonJ 



Plate VIII 



il. The geysers at Grafarbakki. The rod standing by the southern geyser is nearly 



1 ni. Iiigli. 



b. Gryla, sliowing the steam period of the spring. 



