D. K. D.ViDKNSK. Ski.sk.Skü.. \ATi itv.or. MATH. Al I). VIII. 4 |Th.Th<)Hki:i.ss<)n| 



Plati-; i 



a. The twin lakes on the western slope of Krafla, looking north. '^The solfataras are seen in the 

 light-coloured sections on the north-eastern slopes of the two lakes. A man is standing at the spot 



where the two lakes join. 



h. The hot springs ;it Ntinuilj^iil. looking north. (Ins sample Xu, 1 oi-igiiiatcs from the slough seen 

 in the foreground. The rod standing to the left of the slough is ahout 1 m. high. Kratla is seen 



in the hackground, near the centre. 



