146 
MR. J. N. LOCKYBR AND DR. SCHUSTER ON 
many and various considerations which, had to be attended to, mistakes were almost 
inevitable. 
His Majesty the King of Siam had offered to send Francis Chit, a skilled 
photographer in his service, to assist the members of the expedition. As Mr. Beasley 
had brought with him a small but exceedingly good camera for landscape photographs, 
Dr. Schuster thought it advisable to try to get photographs of the corona. Although 
the camera did not follow the sun’s motion, it was hoped that in short exposures this 
motion would not much affect the results. Mr. Francis Chit was charged with the 
preparation and development of the plates. 
If any of the instrumental adjustments were not made with the accuracy which 
would have been desirable, it was not through want of care of any member of the 
expedition. 
It was only by working 12 hours a day in the hottest month of the year, and 
sometimes during additional hours of the night to adjust the clocks, that the 
instruments were in working order a few hours before the beginning of the eclipse. 
After this introduction it will be useful to give a short account of the final 
arrangements which were made for observation. 
IY. ARRANGEMENTS DURING TOTALITY. 
The observatory which, as has already been mentioned, was built before our arrival, 
consisted of two parts, separated from each other by a distance of about 40 yards. 
The smaller of the observatories was intended for the siderostat. Mr. Lott was put 
in charge of it during totality. It was hoped that photographs of the spectrum of 
the prominences and lower parts of the corona should be obtained by the set of 
instruments connected with the siderostat. 
The larger observatory was bounded on each side by a dark room. In one of these 
rooms Mr. Eschke prepared the plates. In the other Mr. Beasley took charge of 
the development. The sailors of the ‘ Lapwing ’ had been trained to carry the 
photographic plates at the times fixed beforehand to and from the instruments. 
Attached to Mr. Penrose’s equatorial was a spectroscope with a camera which was 
of shorter focal length than the one connected with the siderostat. The equatorial 
carried the prismatic camera. Arrangements were made to change the plate one and 
three minutes after the beginning of totality, so as to obtain three photographs of the 
different phases of the eclipse. 
Mr. and Mrs. Loftus took charge of the small camera, by means of which a set of 
photographs of the corona were obtained. The times of exposure were fixed at the 
suggestion of Mr. Janssen at 2, 4, 8, and 16 seconds. A double set of four 
photographs was thus obtained. Mr. Chit in a separate dark room prepared and 
developed the necessary plates. The Honorable H. N. Shore, B.N., had undertaken 
