Errors of Types of Minimum Spirit Thermometers. 433 



Thermometer No. 89,833. Correction. 



1893 at Kew +0-1° 



1895 at Mauritius +0-3 



1897 „ -0-1 



1899 „ 0-0 



1902 „ ... -0-2 



Thermometer No. 175,616. Correction. 



1884 at Kew 0-0° 



1888 at Mauritius +0-6 



1892 „ +0-6 



1896 „ +1-4 



1902 „ +4-0 



The corrections to the minimum temperatures, recorded by 

 No. 1,470, for the three months — 1904, January to March — already 

 dealt with, as determined from comparisons with the lowest points 

 on the thermograms, are given in the following table — 



(1) When the minimum occurred at the apex of a sharp wave. 



(2) When either the approach to, or recovery from, the ilowest 

 point was gradual and the minimum lasted from five to ten 

 minutes : — 



1904. 



January. 



February. 



March. 



CORRECTION TO THE MINIMUM TEMPEBATUKE EECOEDED BY No. 1,470 WHEN IT 



OCCURRED AT — 



The Apex 



A Period of 



The Apex 



A Period of 



The 



i A], ex 



A Period of 



of a Sharp 



Steady 



of a 



Sharp 



Steady 



of a 



Sharp 



Steady 



Wave. 



Temperature. 



Wave. 



Temp 



erature. 



Wave. 



Temperature. 



d. o 



d. o 



d. 



o 



d. 



o 



d. 



o 



d. o 



2 -0-2 



4 +0-3 



2 



-3-0 



1 



-0-3 



1 



-0-5 



2 +0-1 



3 -2-2 



5 -0-2 



4 



-0-6 



3 



-0-6 



4 



-0-3 



3 -0-5 



10 -0-2 



6 0-0 



5 



-0-6 



6 



-0-4 



6 



-0-5 



5 -0-5 



11 -0-4 



7 +0-2 



7 



-1-6 



10 



-o-i 



8 



-o-i 



7 -0-4 



19 -0-6 



8 0-0 



8 



o-o 



12 



-0-4 



11 



-0-9 



9 -0-3 



24 -0-3 



9 -0-1 



9 



-1-3 



16 



-0-3 



12 



-0-6 



10 -0-6 



25 -1-4 



12 +0-2 



11 



-0-3 



17 



-0-2 



18 



-0-2 



13 -0-3 



27 -0-8 



13 -0-1 



15 



-0-3 



19 



-0-7 



21 



-0-3 



14 -0-4 





14 -0-1 



21 



-0-7 



20 



-0-6 







15 -0-6 





15 +0-1 



22 



-0-6 



24 



-0-4 







16 -0-2 





16 -0-3 



23 



-0-8 



26 



-0-4 







17 -0-3 





17 -0-2 



27 



-1-5 



28 



+ 0-4 







23 -06 





18 -0-4 







29 



-o-o 







24 -0-4 





20 -0-5 















25 -0-6 





21 -0-6 















30 +0-1 





22 0-0 















31 -0-1 





23 -0-1 



















26 +0-3 



















28 +0-1 



















30 +0-5 



















31 -0-3 

















8d. -0-76 



21d. -0-06 



12d. 



-0-94 



13d. 



-0-31 



8d. 



-0-43 



16d. -0-35 



