148 IOWA ACADEMY OF SCIENCES. 



The work I had plaiined to do was: 



(1) Note the times of first and last contacts. 



(2) Note the colors of the sky as the eclipse progressed. 



(3) Expose two plates in the larger camera, giving one, one second 

 exposure, and the other five seconds exposure. 



(4) Expose a plate in the smaller camera for about sixty seconds 



(5) Observe the Corona with the naked eye and draw an outline sketch 

 of it from memory after totality was over. 



(6) Observe through the telescope the -structure of the Corona and 

 polar streamers, including any prominences present. 



The weather on Sunday, the day before the eclipse, was 

 warm and sky almost clear. Special Weather Bureau bul- 

 letins sent out in the afternoon gave us promise of a clear 

 sky the next morning, which forecast was fully verified, 

 the morning of the 28th being nearly perfect, the sky deep 

 blue and cloudless, with a gentle, cooling breeze from the 

 west. All observers were at their posts early; curiosity 

 seekers and others who had arrived in special excursion 

 trains were kept out of the grounds and all observations 

 carried out as planned, without interruption. 



CONTACTS. 



The first contact was observed with the telescope and 

 diagonal eye-piece with neutral-tint glass shade, and mag- 

 nifying power of 78, and was noted at 7h, 36ra, 08s, eastern 

 standard time, but as the indentation of the moon's limb 

 at this time was unmistakable, the first contact must have 

 occurred 'at least 5 seconds earlier. 



Second contact and also third were not timed as other 

 work occupied my attention. "Bailey's Beads" were nicely 

 seen just before second contact, and last contact was 

 observed at lOh, 05m, 37s. At this moment the limbs ap- 

 peared to be in contact and 2 seconds later contact was 

 past. 



SKY AND LANDSCAPE COLORS. 



Thirty minutes after first contact a perceptible change 

 in the color of the sunlight was noticeable. At 8:20 a. m- 

 the landscape was rapidly darkening, objects on the ground 

 had an orange tint, and faces of persons bore a strange, 

 pallid tinge. 



