2 yo ICY WINDS. 



should therefore always be prepared for their possible 

 occurrence. 



Coloured glass goggles, with carefully fitted and 

 enclosed sides, are indispensable in all northern coun- 

 tries to avoid the risk of snow-blindness; and cloth 

 masks, veils, gloves, etc., may have to be worn to 

 protect the hands and face when there is a wind. 

 These, however, are matters which deserve careful con- 

 sideration : for " wind " such as we here refer to must not 

 be supposed to be a breeze such as we are accustomed 

 to in England, but a mere draw of air, which is quite 

 sufficient to cause frost-bites and other serious results 

 in very low temperatures. On the other hand great 

 care must be taken not to overload the person with 

 clothing so as to create perspiration, as in such case 

 the damp clothes are apt to freeze. For this reason furs 

 should not be worn by people while in hard exercise. 



The length of the constant day during an arctic 

 summer of course varies with the latitude, every degree 

 further north causing an increase in it of several days' 

 duration; but materials, we fear, are not at hand to 

 enable us to state with precision its exact duration in 

 the very high latitudes attained by arctic explorers, 

 because as they are constantly on the move, no con- 

 tinuous observations are ever obtained at any one 

 point. M. Du Chaillu, in his " Land of the Midnight 

 Sun " has, however, given a table (prepared from offi- 

 cial sources) of the gradual progress of the sun along 

 some of the well-know^n fixed points upon the Norwe- 

 gian coast, which we append, as it serves to convey 

 a better idea of this phenomenon than anything else, 

 and we have, to make it more complete, added the 

 latitudes of the places to the table. 



