330 CARNEGIE INSTITUTION OF WASHINGTON. 



Thanks to the energy shown by Mr. WalHs, the progress of the con- 

 struction work, which had been well advanced by Dr. Edmonds during 

 his assignment to Huancayo of over two years, was very satisfactory, 

 despite delayed deliveries of materials and supplies. The party took 

 up residence at the Observatory site on May 3, using the absolute 

 observatory as quarters pending the completion of the bungalow 

 intended for observers' quarters. The trimming out and finishing of 

 buildings were done by Peruvian carpenters, Mr. Wallis having obtained 

 the services of first-class mechanics from Lima and from Chupaca. 

 Efforts were concentrated upon the completion of the variation observa- 

 tory, and the magnetograph was installed and in operation by October. 

 Absolute magnetic observations were made weekly beginning in June, 

 and monthly scale-value determinations for the variometers were 

 begun in October. Daily meteorological observations were obtained 

 throughout the year. Time observations were made at irregular 

 intervals until the beginning of the magnetograph work, since which 

 time they were made weekly. 



The first attempt to get water by a well had to be given up after 

 digging to a depth of 46 meters. A second well was started in August 

 at what seems to be a more favorable location on the site, and it is 

 hoped that water may be found within a depth of 45 meters. Mean- 

 while, water for living purposes and for construction work during the 

 dry season must be carried by burros from the Chupaca River, about a 

 mile distant. 



A small electric generator and storage-battery equipment were pur- 

 chased for use in connection with atmospheric-electric registrations, to 

 be undertaken later, and for lighting buildings and instrument regis- 

 ters. This plant is to be installed in a room of the small 4-room 

 concrete building, which was built near the quarters for laundry, 

 servants' quarters, and storage. Materials were purchased and con- 

 struction begun on the central atmospheric-electric and earth-current 

 instrument-house, which is similar to that being built at Watheroo. 

 A corral was built for the horses, the corners of the site were marked 

 by concrete monuments, paths between buildings were completed, and 

 fencing and improvement of site were begun. 



As in past years, the Peruvian Government extended every facility 

 to Dr. Edmonds and to Mr. Wallis and granted the privilege of free 

 entry for all materials and apparatus. Numerous courtesies and 

 valuable assistance were also received from the American Am- 

 bassador at Lima. 



MISCELLANEOUS OBSERVATORY WORK. 



Atmospheric-electric observations at Washington, District of Co- 

 lumbia.— See page 333. 



Atmospheric-electric observations at Apia, Samoa. — See statements on 

 pages 312 and 333. 



