370 Mr. J. Evershed. 



The driving clock was bolted down to the north end of the coelostat 

 pier. It was driven by a weight suspended from a large tripod erected 

 near. 



The 3^-incfi Telescope. 



Iii addition to the photographic instruments I had a 3^-inch 

 equatorial telescope, and a high dispersion solar spectroscope. The 

 telescope was mounted on a packing case outside the hut, and was 

 useful in a variety of ways. With the spectroscope attached it was 

 used for the observation of solar prominences on the day of the eclipse, 

 and on several other occasions. 



The Observing Hut. 



This was a rectangular wooden shed, the sides enclosing a space 

 14 by 9 feet and 6 feet high. The sloping roof was covered with 

 boards up to alxnit 1 foot from the centre beam. A large sheet of 

 canvas was stretched above the boards, leaving an air space between : 

 this allowed of the free circulation of air between the canvas and the 

 wood, and was designed to prevent the interior from becoming unbear- 

 ably hot during the day. 



This arrangement, however, was anything but water-tight, as we 

 found to our cost during a spell of bad weather. We subsequently 

 procured a large rick cover, which was tied securely over the canvas 

 and down to the ground on the weather side of the hut. 



This hut was designed by my brother for the accommodation of the 

 somewhat unwieldy reflecting spectrograph and two camp beds. The 

 frame was constructed by him before leaving England. 



The accompanying ground plan shows the general arrangement of 

 the camp. 



(3) Narrative of Expedition and Observations made on the Day of th? 



Eclipse. 



The expedition, consisting of my brother (Mr. Harry Evershed) and 

 myself, left England on April 30th, and travelling ria Paris and 

 Marseilles arrived at Algiers on May 3rd. 



At Algiers we received every attention and assistance from the 

 British Consul-General, Mr. Hay Newton, to whom our acknowledg- 

 ments are due. He procured for us a letter from the Prefecture to 

 the Mayor of Maelma, ordering the latter to assist us in every possible 

 way in selecting a site for our camp. 



We also received assistance and advice from M. Tre*pied, of the 

 Algiers Observatory, who very kindly called at our hotel and dis- 

 cussed with us our plan of operations. 



