Apeil 3, 1903.] 



SCIENCE. 



555 



and laboratory types. Also the 

 photometric testing of incandescent 

 and are lamps, and such experimental 

 and research work as may be involved 

 in developing methods of testing. 



(c) Radiation, pyrometry and phytometry. 



The study of thermal radiation and 

 the determination of high tempera- 

 tures and luminous intensities by 

 radiation measurements; also the in- 

 vestigation of various standards of 

 light. 



(d) Mechanics, hydraulics and engineering, 



especially as applied to the study and 

 testing of gas and water meters, pres- 

 sure gauges and the various instru- 

 ments for measuring high and low 

 pressures, anemometers, engine indi- 

 cators, speed counters and other en- 

 gineering instruments 30 



Total 100 



Applicants must show that they have been 

 graduated from colleges or technical schools 

 or that they have attained an equivalent edu- 

 cation. A preliminary rating will be made 

 of the first subject as shown by the applica- 

 tion and accompanying vouchers, and those 

 competitors who fail to attain at least 70 per 

 cent, on this portion of the examination will 

 not be given a rating on the thesis under the 

 second subject nor the examination test under 

 the third subject. From the eligibles result- 

 ing from this examination it is expected that 

 certification will be made to fill four vacancies 

 in the position of assistant physicist in the 

 National Bureau of Standards, two at a 

 salary of $2,200, one at $1,800, and one at 

 $1,600 per annum, and to other similar 

 vacancies as they may occur. 



On April 21, 1903, there will be an examina- 

 tion for the position of scientific assistant, 

 the subjects and weights being: 



1. College course with bachelor's degree (in- 



eluding a certified statement in detail of 

 courses of study pursued and standing in 

 each) 40 



2. Post-graduate coxirse or special qualifica- 



tions {including a certified statement in 

 detail of courses of study pursued and 

 standing in each ) 30 



3. Thesis, or other literature (on a scientific 

 subject bearing upon the work the ap- 

 plicant desires to pursue) 30 



Total 100 



Applicants who comply with the preliminary 

 requirements may be examined in one or more 

 of the following subjects. Each of these sub- 

 jects, however, is rated independently and con- 

 stitutes a distinct examination in itself: Agri- 

 cultural statistics; agrostology; chemistry, 

 agricultural; chemistry, analytical, methods 

 for the detection of food adulteration; chem- 

 istry, analytical, ofiicial methods, except food 

 adulteration; chemistry, analytical, qualitative 

 and quantitative, including analytical chem- 

 istry used in connection with important in- 

 dustries; economic botany; entomology; for- 

 estry; horticulture (candidates in this subject 

 should state their qualifications for service in 

 Porto Eico and Hawaii); library science; 

 physiology and nutrition of man; plant bac- 

 teriology; plant breeding; plant pathology; 

 plant physiology; pomology; rural engineer- 

 ing, especially as applied to irrigation and 

 drainage; seed testing. 



From the eligibles resulting from this ex- 

 amination it is expected that certification will 

 be made to the position of scientific assistant 

 in the Department of Agriculture and to other 

 similar vacancies as they may occur. 



TSE DESERT BOTANICAL LABORATORY. 

 The Desert Botanical Laboratory of the 

 Carnegie Institution will be located at Tuc- 

 son. Mr. Frederick V. Coville and Dr. D. 

 T. MacDougal, the advisory board of the labo- 

 ratory, after a trip in January and February 

 through the deserts of Texas, JSFew Mexico, 

 Arizona^ California, Chihuahua and Sonora, 

 reported in favor of locating the laboratory 

 at Tucson, and the executive committee of 

 the Carnegie Institution has approved the 

 selection. The actual site of the building is 

 on the shoulder of a mountain two miles west 

 of the city of Tucson. This mountain and 

 the adjoining mesas bear a splendid, repre- 

 sentation of such characteristic desert forms 

 as Gereus giganteus, Fouquiera, Opuntia, 

 Echinocactus, Oovillea and Parhinsonia. 



