540 



Prof. R. Threlfall and Mr. J. F. Adair. On the 



Other Observations from which Mean Intervals of Tiir * 



X/iiLtJ Ol 



1. 



, ,. 

 o bservation. 



2. 



AT A 



JM ature and 

 quantity of ex- 

 plosive. 



3. 



J-empera- 

 ture of 

 tlie fork. 



4. 



rv 



JL emperature 

 oi ine 

 water. 



5. 



- ri . , 



JJistance be- 

 tween tops 

 of piles. 



6. 



Correction 

 due to 

 slope of 

 pile. 























15 '1° 



J. 1 u 



15410 





55 



iviay / . 



t' 'fil V "•' 11" 

 J_ieit to ngiit. 



55 

 55 







j> 

 >» 



55 



T?irrVif f n loff 



xiigLiE i/O leic. 



55 



" 





» 



J> 























16° 



14 '5 



15840 



— P>1 



— l)J- 



July 7. 



No record on 



55 







>> 



V 





far gauge 













July 11. 



No record on 















gauge 













July 13. 



No record. . . 



55 











>) 





55 



16 



14-*3 



15840 



-51 



J9 



No record . . . 



55 











55 



No record . . . 



55 













No record . . . 















No record . . . 



55 











July 26. 







13-4° 



13° 



15840 



-59 



Record lost by 



55 













smudging 













Aug. 1. 



No record . . . 













5) 



No record . . . 



55 













No record . . . 



55 











Aug. 10. 



Missfire .... 



55 











Sept. 13. 



G-auges read- 





18-6 



16 



18210 







justed 













