ABSTEACTS: PHYSICS 21 



corrections to these standards for the various instruments used are given 

 in detail. The results are summarized under the main geographical 

 divisions as follows: Africa, 386 stations; Asia, 308 stations; Australia, 

 10 stations; Europe, 36 stations; North America, 328 stations; South 

 America, 111 stations; Islands, Atlantic Ocean, 68 stations. Islands, 

 Pacific Ocean, 51 stations. The total number of stations is 1298; 

 with reoccupations the total is 1391. The Table of Results contains 

 for each station the geographical latitude, longitude, date of observation, 

 the observed values of magnetic declination, inclination, and horizontal 

 intensity, the local mean times to the nearest one-tenth hour for each 

 element, the instruments used, and the observer. Accounts of some of 

 the expeditions are given with illustrations primarily to show in a general 

 way, the character of the field work and some of its difficulties. The 

 last section of the volume is devoted to descriptions of stations arranged 

 under the same geographical divisions adopted in the Table of Results. 



J. A. Fleming. 



PHYSICS. — The present status of the temperature scale. George K. 



Burgess. Eighth International Congress of Applied Chemistry. 



22:53. 1912. 

 Attention is called to the desirability of expressing temperatures on 

 the thermodynamic scale and a table of corrections to the various gas 

 scales is given. It is shown that the platinum resistance thermometer 

 may be used to reproduce the temperature scale with the greatest exact- 

 ness rom —200° to +1100°C. The limitations of thermoelectric and 

 radiation pyrometry are discussed as well as the status (with tables) of 

 several of the boiling and melting points of substances suitable for 

 standard temperatures. International agreement on a temperature 

 scale is urged. The status of the scale may be illustrated by the accom- 

 panying tables of standard temperatures. 



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