538 



Prof. R. Threlfall and Mr. J. F. Adair. 6>/< the 



General 



1. 



Date of observation. 

 ^ 



2. 



Nature and 

 quantity of ex- 

 plosive. 



3. 



Tempera- 

 ture of 

 the fork. 



4. 



Temperature 

 of tbe 

 water. 



, 



5. 



Distance be- 

 tween tops 

 of piles. 



6. 



Correction 

 due to 

 slope of 

 pile. 











cm. 





Aug. 25 



Dynamite, 10 oz. 



18-8 



15 -5° 



18210 









5' 



18° 



33 



33 



3' 





33 



33 





33 













33 







5) 





>> 



33 





Sept. 10 





15 



15 2 



}S 



IS 

 a 





M 





M 





it 













>» 





" 



17 5° 

















33 



fi 











33 



a 













a 



Sept. 13.1 ............ 





18-6 



16° 













)» 



33 



U 









3* 



33 







3 3 







3- 



a 







21-8 













3) 





„ 



33 



9 . . , 







|' 



„ 



if 









33 







Sept. 23 



Guncotton, 18 oz. 



23* 



18° 



33 



tl 







33 



33 



» 



33 



ft 











j) 















33 



Oct, 3 



" t 



28 



18 : 5 Q 



33 









11 



33 







>l 

















» 





33 



33 









25 -5° 





33 



ii 



Oct. 7 



33 



G-uncotton, 4 lbs. 



26° 



19° 



33 



S3 





33 







33 



33 







3> 





33 









33 



33 











23 



20° 



33 





:::::::::::::: 



3) 





3) 







