Description of the Carnegie 163 



The boat equipment consists of two non-magnetic 20-foot whaleboats and one 

 16-foot non-magnetic gig (see PI. 9). 



There was provided a refrigerating plant constructed of bronze and copper and 

 operated by a 6-horsepower engine, especially designed and built of brass and bronze. 



All living quarters are below, the ventilation and lighting being obtained by 

 means of a cabin trunk on deck about 42 feet 8 inches in length, 16 feet 6 inches in 

 width and 3 feet in height, and safety is secured by means of 6 transverse watertight 

 bulkheads dividing the vessel into 7 compartments. The saihng officers' and crew's 

 quarters are forward, 42 feet in length and occupying the full width of the vessel; 

 next are the quarters for the scientific staff, 38 feet in length and extending the full 

 width of the vessel; and abaft of these is the machinery space, 23 feet in length. 

 The living quarters have been planned to give good accommodations for all, and are 

 fitted with the necessary conveniences for long cruises. Figure 9 gives the inboard 

 profile of the Carnegie and shows the general arrangement of the vessel and her 

 deck plan. (See also Pis. 9, 10, and 15.) 



There are 2 galleys, one aft for the scientific personnel and the other forward 

 for the watch officers and crew, especially designed cooking ranges of bronze and 

 copper being provided. The galley utensils are made of aluminum or copper and 

 the cutlery is of Mexican silver. 



Of special interest is the observation room, or deck house, located on the main 

 deck amidships, forward and aft of which are circular observatories with revolving 

 domes not unlike those of astronomical observatories (see Pis. 7, 9, 15, and 16).^ It 

 is thus possible to make magnetic observations both in the open and under shelter. 

 The observation room is 14 feet 6 inches long and 16 feet wide. The observatories 

 are circular, 7 feet 6 inches in diameter, each fitted with a revolving dome, con- 

 structed of bronze framework and plate glass so arranged as to permit sighting, 

 whenever desirable, on celestial or terrestrial objects in magnetic-declination work. 

 The joiner-work is of white pine, painted, with hardwood trimmings finished 

 bright. 



The positions of the stands for the various instruments have been so chosen 

 that any effect resulting from the small amount of iron in the engine, which could 

 not be replaced by non-magnetic material, is negligible. (See pp. 202-203.) 



To eliminate further any possible magnetic effect, empty spaces are arranged 

 around and below the instrument stands, making it impossible for any one, except 

 the observers, to come closer than about 8 feet to the magnetic instruments while 

 observations are in progress. 



The total cost of the Carnegie, fully equipped, approximated $115,000. 



'In 1915 there was added abaft the after observing-donie an observation-house for the atmospheric-electric work (see p. 

 376 and PI. 22, Fig. 1). 



