460 



PROFESSOR CHRYSTAL 



VII. Observations with Index Limnographs. 



Date. 



Staff. 



T 3- 



Limits of 



1905. 



Feet. 



Minutes. 



Error. 



July 8 



1-35 



6-00 



±•08 



10 



1-35 



599 



+ •05 



27 



1-12 



5-95 



+ •01 



Aug. 7 



2-20 



5-96 



+ •08 



30 



2-15 



5-99 



+ 02 



Sept. 5 



1-80 



6-06 



+ •08 



5 



1-80 



6-08 



+ •08 



Weighted mean T 3 = 6004. 



VIII. Observations with the Waggon Recorder near St Fillans (Picnic Point). 



Date. 



Staff. 



T 



3 - 



Number of 



1905. 



Feet. 



Minutes. 



Oscillations. 



Aug. 12 



2-07 



6-14 



36 



13 



195 



5-89 



29 



21 



2-20 



5-91 



45 



29 



2-22 



5-98 



36 



29 



2-22 



6-01 



48 



30 



215 



6-07 



65 



31 



210 



6 00 



60 



Sept. 3 



1-85 



5-98 



36 



23 



1-82 



6-008 



58 



Weighted mean T 3 = 6 "005. 



IX. Observations with Index Limnographs. 



Date. 

 1905. 



Staff'. 

 Feet. 



T 4 - 

 Minutes. 



Limits of 

 Error. 



Aug. 31 



31 



Sept. 30 



2-10 

 2-10 



1 



403 

 394 

 397 



+ •05 

 + •10 

 + •04 



Weighted mean T 4 = 3"99. 

 X. Observations with Index Limnographs. 



Date. 

 1905. 



Staff. 

 Feet. 



T 6 - 



Minutes. 



Limits of 

 Error. 



July 8 



. 27 



Sept. 2 



1-35 

 1-12 

 1 90 



361 

 345 

 347 



+ •15 



±•04 

 ±•05 



Weighted mean T 6 = 3-48. 



