338 



KXI'KIMTION TO POINT BARKOW, ALASKA. 



xlioirini/ tin- xt'ti-ii't- tfnti-rtitnrr(it l'ylti<nni<' from 



, 1SS2, to June, IS*:; ( 'oiitiniu'd. 



* Diseontinurd : sin litre of ico mfltiujx. 



Ti'iniii i-HtufC ofucti-trafcr (/I I'lthtnntii', Aloxka. 



[From daily observations.] 



May 2. temperature at "lead" of open -watir 2 milfs i'l-om shun- nil' l.r.i.m: wurl'm <, 2'i '.'_'; 

 bottom, 7i* fi-ct. -" 



TKMPKKATURE OF THE EARTH. 



A slial'i was opened iu the frozen earth for tbe observation of earth temperatures December 8, 

 . and continued down to a depth of 37 feet 6 inches. A thermometer protected by a wooden 

 case was buried at the bottom of the shaft by the workman every night and read on beginning 

 work the next morning. From May 28, 1882, to April 23, 1883, a thermometer was kept suspended 

 in tin- meat cellar at ;i depth of 13 feet below the surface and read once a day. From April '23, 

 1SS.'!. to the. dosing of tlie station the thermometer was let down by a cord to the bottom of the 

 shaft and drawn up and read once a day. At this level the temperature remained constant 

 at -f 12^ F. 



