536 



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



On the 



Genera 



1. 



Date of observation. 



May 8 



May 11 . 

 May 16 . 

 May 18 

 May 19 . 

 Sept. 21. 



Sept. 23. 



July 5 



July 11. Left to right. 



Eight to left. 

 „ Left to right. 

 July 26 



Aug.l 

 Aug. 3 



Aug. 10. Left to right 

 ,, Eight to left 



„ Left to right 







55 



j Aug. 25 . . . . . . . . . . . . . '. 



2. 



3. 



4. 



5. 



6. 



Nature and 

 quantity of ex- 

 plosive. 



Tempera- 

 ture of 

 the fork. 



Temperature 

 of the 

 water. 



Distance be- 

 tween tops 

 of piles. 



Correction 

 due to 

 slope of 

 pile. 



9-oz. disk of gun- 

 cotton. 



55 



15-1°C. 



35 

 33 



17 -6° C. 



53 



33 



17 : 5 



i/''o 



cm. 

 15410 



33 



35 

 53 







33 



:3 



55 





35 



35 



53 



55 

 55 



23° 

 21 



18"5 



55 



55 



18210 



53 

 53 





55 

 55 

 55 



55 



25 



33 

 35 



24 



53 



18° 



» 



,, 



33 



35 



55 



„ 



3> 

 33 

 33 



33 



Dynamite, 10 oz. 



16 



33 



14 : 5 



55 



15840 



-51 



33 



" 



15 "5° 



33 



33 



14 8 



33 



55 



35 



-51 



33 



13 - 4 



13° 



55 



-59 



33 

 35 

 33 



55 



]4-5 



13'-9° 



53 

 55 

 33 



53 



3, • 



53 



13 -5 



13' ! 3 





33" 



33 



13 -6 



33 



33 



35 

 33 



" 



55 



55 

 53 



35 

 53 



3' 





33 



13 4 



13-5 







35 

 55 



13-5 



13''4 



35 





<3 

 35 



18-8 



33 



15' : 5 



35 



35 



18210 







