THE EXPERIMENTS OF 1834. 



87 



Expet. 



24. \ 



26. 



26. 



27. 



28. 



29. 



30. 



31. 



32./ 



Exper. 



33. 



34. 

 35. j 



Exper. 



36. 

 37. 

 38. 

 39. 

 40. 

 41. 



Same station. 



Depth diminished until = 3.4 feet. 



Space = 160 feet. 



Sees. 



'' \ 

 14 



15 



14 



14 ;> 



14 



14 



14 



V14.5, 



Vel. = 10.593; 7.0867 miles. 



This experiment was made under the 

 superintendence of Mr Ellis. 



Glasgow and Ardrossan Canal. — Port Eglinton. 



Breadth variable, with vertical sides. 

 Depth 5.6 feet. 



Space =r: 501 feet, 



Vel. = 17.431 ; 8.3163 miles. 



Union Canal. — Tunnel. 



Breadth at top = 17.76, 



Breadth at bottom = 11.00, 



Depth =: 6.5 nearly 



Rocky bottom, irregular. 



• See Figs. B & C, PI. II. 



Space = 2038 feet, 



Vel. = 13.208 ; 8.8361 miles. 



On the velocity of waves in regard to their height above the surface of the 

 water, the following experiment was made. 



Experimental Station. — Hermiston. 



Exper 



42. 

 4.3. 

 44. 



46. 



Height. 



6 in. 



Space = 700 feet. 



Sees. 



61.5 

 61.76 

 62.5 

 63.6 



The following series of experiments were made with the view of determining 

 whether the velocity of the wave remained unchanged during the whole of its 

 progress, or varied with the distance over which it had travelled. I may observe 

 as a matter of some interest, that when the wave had to traverse 1000 feet before 

 arriving at the first station of observation it had to encounter a change in the 

 direction of the canal, equal to a curved deflexion of 90° ; and where it passed over 



