74 Sir J. South — Vibrations caused by Railway [1863. 



1847, March 16.— IV. 



No. 



Time. 



Observations. 



Yards. 



Remarks. 



98 

 99 



h m s 

 7 8 5 

 8 30 

 10 18 

 10 38 



South gun. 

 Shaft gun. 



870 

 878 



Velocity 21*9 miles. 





V. 



100 



lOI 



7 18 32 



19 5 



20 37 



21 5 



Shaft gun. 

 South gun. 



1038 

 988 



Velocity 25*7 miles ; weight of train 

 69-5 tons ; engine 14-5 tons ; train's 

 length 194 feet. 



VI 







102 



103 



104 



7 42 2 

 42 14 



42 43 



43 20 

 43 45 



Shaft gun. 



(5) 



South gun. 



824 



305 

 1079 



Velocity 35*8 miles; train 53*5 tons; 

 engine i4'5 tons ; train's length 

 168 feet. 



VII 





105 



106 



107 



8 31 42 



31 55 



32 9 



32 59 



33 22 



Shaft gun. 



(5) 



South gun. 





846 

 428 

 1058 



Velocity 36'9 miles ; train 98*5 tons ; 

 engine 21 tons ; length of train ^22 

 feet. Wind S.E. ; fresh. 





VIII. 



108 

 109 



8 43 48 

 43 50 



45 48 



46 8 



Shaft gun. 

 South gun. 





668 

 821 



Velocity 20-1 miles ; train 5575 tons ; 

 engine 2375 tons; train's length 

 146 feet. Tremors unusually small. 



1847, March 17.— I. 



no 



6 42 45 





1055 



Velocity 33*9 miles ; train 104 tons ; 





43 12 



Shaft gun. 





engine 19 tons ; length of train 



III 



43 40 





318 



362 feet. 



112 



43 55 



(5) ditto 



337 







44 22 



South gun ; cross very 











strong. 







113 



44 54 





1166 





II. 



114 



6 55 26 





1076 



Velocity 28*7 miles ; train 70 tons ; 



56 I 



South gun. 





engine 12 tons ; train's length 247 ; 



"5 



56 37 



Line of stars very beau- 



304 



feet. Wind S.E.; scarcely sensi- 







tiful. 





ble ; image very unsteady. 



116 



56 46 



(5) •.• 



315 







57 24 



Shaft gun. 







117 



57 35 



Cross still very strong... 



832- 





118 



57 47 





1C04 





