Ixviii REPORT — 1869. 



(16.) He shall ascertain, bj^ means of a simple inspection, that the he- 

 ginning and ending, as shown by the curve itself, are the same as 

 those described in front of the curve. 



(17.) That the joiirnal readings of the Standard Thermometer are entered 

 under their proper dates into the Thermograph tabulation sheets. 



(18.) He shall examine in a general manner the accordance of the Ther- 

 mograph and Standard readings for each day. If these two tests 

 be satisfactory, he may conclude that the tabulations and Standard 

 readings have both been entered under their proper dates. 



(19.) Check the accuracy of the subti'actions made in the tables of the 

 subsidiary measurements. 



(20.) Investigate all cases in which A — B is greater than 0°-5 Fahr. ; 

 and if an error is revealed, it ought to be corrected at once. 



(21.) Examine both the corrected Standard reading and the corresponding 

 tabulated one for all those cases in which there is a difference 

 greater than 0°-5 between the two. 



(22.) Compare the dry-bulb readings with the corresponding wet ones, 

 marking and examining all those cases iu which the latter appear 

 higher than the former. 



(23.) Check the accuracy of the maximum and minimum temperatures 

 furnished by the outlying observatories. 



(24.) Eecord the monthly mean diiferences between the simultaneous 

 Standard and Thermograph readings. 



(25.) Make forty remeasurements as specified. 



Central Observatory (^Director'). 



(2G.) The assistant at Kew shall bring before the Director of the Central 

 Observatory all curves, with their corresponding tabulations, that 

 arc deficient from any cause, and the Director shall make the ne- 

 cessary remarks on the curves and tabulations, or cause them to 

 be made, and shall commiinicate all cases of failure to the Meteo- 

 rological Committee on the one hand, and to the Director of the 

 observatory where the failure occurred on the other, making any 

 remarks that may tend in his estimation to obviate in future the 

 causes of failure. • 



(27.) The Director of the Central Observatory shall also communicate as 

 above the monthly mean differences between the simultaneous 

 Thermograph and Standard readings, as well as the result of the 

 forty remeasurements made at Kew. 



EeGULATIOITS rOR ANElIOGEAPn. 



Outlyhiri Observatory. 



(1.) The curves and tabulation forms to be written upon according to the 



patterns furnished. 

 (2.) Always begin a new month with new tabulation forms. The curves 



and forms are to be numbered consecutively from the beginning of 



the year, as will be seen from the diarj-. 

 (3.) The pricks on the curve, when compared with the Greenwich mean 



times of commencement and taking off, ought to agree with the 



latter within five minutes at each end. 



