30 CARNEGIE INSTITUTION OF WASHINGTON. 



associates, was completed erly in the year, a total of 348 stations having been 

 occupied. Mr. Pearson, field observer of the department, continued work 

 in Turkey in the erly part of the year until relievd by Mr. Sligh, who ex- 

 tended the work to Palestine, Syria, Arabia, Mesopotamia, and the islands of 

 Rhodes and Cyprus. Up to the end of July of this year these two observers 

 had occupied a total of 47 stations. Another observer, Mr. Stewart, left 

 Washington erly in June to begin extensiv work in South America, proceed- 

 ing in the launch Bl Imdn, provided especially for work along the Amazon 

 and its tributaries. Additional observations are reported also from Canada 

 and from various European countries in which initial determinations or in- 

 strumental comparisons have been made. 



The offis work of the department has gone forward with corresponding 

 productivity, the large volume of computations requird being kept closely 

 up to date. The preparation for collectiv publication of data obtaind by the 

 department on land and on sea is now well advanced, altho many of these 

 data have been alredy fumisht for use by hydrografic offises and other na- 

 tional and international bureaus. Much critical attention must be devoted 

 by the offis staff to the inspection and perfection of instruments and auxiliary 

 appliances. By the aid of a skild mechanician and a shop now attacht to the 

 department it has been practicable to attain a degree of instrumental perfec- 

 tion and a degree of economy in cost not hitherto equald in this kind of work. 



About fifty research associates have carried on investigations under the 



auspices of the Institution during the past year, either by aid of grants made 



directly to the individuals concernd, or by aid of grants 



Investigations of made to organizations like the American Schools at Athens 

 Research Associates. ° 



and Rome, or by cooperation with our departments of re- 

 search. In general, each of these associates has been in collaboration with 

 one or more colleags or assistants, so that the total of those contributing to 

 this work has been upwards of one hundred investigators. The range of 

 their investigations embraces sixteen distinct fields of research, namely: 

 archeology, astronomy, botany, chemistry, geology, geophysics, literature, 

 mathematics, metallurgy, meteorology, paleontology, philology, physiology, 

 political science, terrestrial magnetism, and zoology. Reference must be 

 made, therefore, to the reports of individual investigators and to the general 

 bibliografy, to be found in the current Year Book, for a fuller account of the 

 fruitful activities in this branch of the Institution's work. It should be 

 observd, however, that existing and prospectiv economic conditions, else- 

 where referd to in this report, will probably require curtailment in this 

 branch of work in the near future. 



