proceedings: philosophical society 21 



Preliminary analysis of the meteorological records indicates that, in 

 general, the fall of temperature was comparatively small, the changes 

 of pressure small and irregular, and the changes of direction of the wind 

 apparently rather large, but irregular. The small change of tempera- 

 ture may be due, partly, to cloudy weather prevailing along the path 

 of totality, and the irregular fluctuations of pressure and wind to condi- 

 tions favoring the development of local storms. 



Confirming results found in studies of other eclipses, the greatest 

 changes of conditions, in most cases, occurred between five and twenty 

 minutes after the passage of the shadow; also, there are evidences of 

 inblowing and outflowing winds around the area of totality suggesting 

 the circulation found during the eclipses of 1900, 1901, and 1905. 



Discussion: This paper was discussed by Messrs. Bauer, Abbot, 

 and Humphreys. 



C. G. Abbot presented the third paper on Observations of the Smith- 

 sonian eclipse party, June 8, igi8. This paper was illustrated by 

 lantern shdes. 



Mr. L. B. Aldrich assisted by A. Kramer and by Rev. Clarence 

 Woodman, a volunteer, observed the total solar eclipse near Lakin, 

 Kansas, June 8, 1918. Besides noting general phenomena, Rev. Wood- 

 man observed times of contact as follows on Greenwich mean time: 



Latitude 37° 53' 04" N. 



Longitude 101° 17' .51" W. 



ist Contact 10'* 19™ 48. 5^ 



2d Contact ii'' 27™ 15.1^ 



3d Contact ii"! 28" 37.3 



4th Contact 12'' 29™ 45.4^ 



He also exposed two 3 -inch 11 -foot focus cameras which had been 

 set up and adjusted in the four days preceding the eclipse. 



Messrs. Aldrich and Kramer observed with the pyranometer the 

 radiation of the sun and sky separately and in combination from about 

 I P.M. of June 8, through the eclipse until sunset and continued after 

 sunset, observing the intensity of twilight on a horizontal surface. 

 During totality and in the night they observed the nocturnal radiation. 



The week of preparation was unfortunately so cloudy that no focus 

 plates could be taken, and no rating of the camera driving clock on the 

 sun could be made. Indeed as late as noon of June 8, it seemed that the 

 sky would surely be overcast during the eclipse. However, the after- 

 noon proved nearly cloudless apart from streaks of cirrus and occasional 

 cumulous clouds. 



The observers regarded the degree of darkness during totality as 

 unexpectedly great, and the spectacle as unusually grand. Successful 

 photographs of about 70 seconds' exposure were obtained, but they 

 were somewhat marred by imperfect rating of the clock due to the 

 bad weather. 



Discussion: This paper was discussed by Mr. Kimball. 



