126 



The following few observations made at sea may here be added : 



March 8, 1904. Latitude at noon, 60' 42' S. ; longitude at noon, 161* 11' E. At about 8h. 30m. p.m. 

 faint aurora cloud appeared in E. 



At 9h. 40m. p.m. became fairly brilliant and formed a huge arc, stretching from E. horizon to 

 W. horizon and to S. of zenith. Altitude of apex 70, breadth of arc 3. Light pale straw and 

 white, with tinge of green, but no red. Very diffused. No sharp vertical rays. Movement slight. 



At 9h. 45m. p.m. had nearly all dispersed. Temperature, + 36 F. Wind W. by N. Barometer 

 28 -70 inches. Cloud nil. 



At lOh. p.m. arc again visible, extremities bearing nearly same, but altitude of apex increased 

 to 80 or 85 broader in W. than formerly. Same diffused appearance. 



March 13. Latitude at noon, 53 32' S. ; longitude at noon, 165 17' E. Slight auroral displays have 

 been seen nearly every evening, but extremely faint. 



Heavy squalls of wind and hail last night, when force of wind rose to 10, Beaufort's scale, 

 and some of the hailstones measured 1 6 centims. through their major axis and 1 3 centims. 

 through their minor. Also occasional flashes of lightning in various directions, but principally 

 N.E. During middle watch there was an extraordinary display of St. Elmo's fire on mast-heads 

 and yard-arms, at times so brilliant as to show outline of crow's nest and yards against the dark 

 sky. The phenomenon was most brilliant at midnight and between Ih. a.m. and 2h. a.m. 



TABLE showing Number of Days in each Month when Aurora; were Recorded. 



A.M. 



c 

 o 

 o 



81 



P.M. 



nn 



1 12 1 



1903 



1903 



/3OZ 



Curves showing diurnal frequency of aurorse. 



