NO. 17.] STATE OF THE SKY AND OF THE SEA. 21 



t~ Glaced frost. b Blue sky. 



®p Passing rain-showers. c Cloudy. 



® Solar corona. d Drizzling rain. 



© Solar halo. P Passing showers. 



UJ Lunar corona. q Squally. 



(D Lunar halo. 



The observations of the aurora polaris will be treated by Prof. Nansen 



in a special memoir, and are therefore not entered in the Meteorological 

 Tables. 



THE STATE OF THE SEA. 



The direction of the motion of the sea was noted by the compass in 

 the same manner as the wind, and has been reduced to the true meridian. 



The Sea-Disturbance was estimated in accordance with the following 

 scale: 



= dead calm. 4 = moderate. 7 = high 



1 = very smooth. 5 = rather rough. 8 = very high. 



2 = smooth. 6 = rough. 9 = tremendous. 



3 = slight. 



The state of the sea has not been entered in the Tables, but referred to 

 a special chapter. 



THE HOURS OF OBSERVATION 



are local time, civil date. 



THE POSITION OF THE SHIP. 



The latitude and longitude (Greenwich Mer.) for each hour of observation 

 given in the Tables have been taken from charts showing the exact route 

 of the Fram from Vardo to the New Siberian Islands, (cf. vol. Ill, No. 9, Pis. 

 VII— IX) and from the astronomical observations published by Prof. Geelmuyden 

 in vol. II, No. 6 of this work. The positions between the places determined 

 directly by astronomical observations have been computed by direct linear 

 interpolation. 



