Errors of Types of Minimum Spirit Thermometers. 



429 



Thermometer 



No. 175,616. 



Series 



1st and 2nd combined 



• 3rd 



to 



r 



80°-0 

 66-4 



79°'0 

 66-0 







sees. 

 6 



sees. 

 12 



sees. 

 18 



sees. 

 24 



sees. 

 6 



sees. 

 12 



sees. 

 18 



sees. 

 24 



t 

 X 







73-1 

 •118 



69-9 

 •113 



68-5 

 •104 



o 

 67-8 

 •095 



o 



73-2 



•098 



69-6 

 •107 



68-5 

 •092 



67'9 

 •080 



Mean \ 





0-1 



07 







0-094 





TABLE V. 

 Summary. 



Type of Thermometer. 



Maker and Number of 

 Thermometer. 



Mean X. 



Mercurial — Kew Standard 



Kew 714 



Hicks 175,616 



Casella 115,511 



Darton 45,535 



Casella 89,833 



Negretti and Zambra 41,178 



Casella 1,470 



0-192 



Minimum Spirit, Type III 



Type II 



Type I 



0-101 

 0-072 

 0-035 





0035 





0-031 





0-031 







TABLE VI. 



Ratio of the Coefficient of No. 714 to that of each Type of 

 Minimum Thermometer employed. 



No. 714. 



No. 714. 

 Type I. 



No. 714. 

 Type II. 



No. 714. 

 Type III. 



0-192 



5-82 



2-67 



1-90 



