a 
aes 
ON WAVES. 463 
At Cloch Light,—High Water is 51 Min. earlier than at Port Glasgow. 
Liverpool ......... sea enenaneed se 51 do. do. 
Whitehaven ...... sadessséndeedssO2 do. do. 
Newry --rcecscseeeee Sey Baer 85 do. do. 
Donaghadee ...........s000008 127 do. do. 
Port-Rush ..........sse0ee0 5h. 35 do. do. 
At Garmoyle Light,—H. W. is 6 Min. later than at Port Glasgow. 
GWU GE ee cade eee ocacedavbe as o> 24 do. do. 
Rashilee i. 5.0.2.ocsessecenesnes 43 do. do. 
Clyde iBank} ic..,..5.sesnactd- oe 61 do. do. 
Crawford’s Quay .....+..sece0e 76 do. do. 
Broomielaw .........sseessseeees 83 do. do. 
Being 1 hour 23 minutes between Port Glasgow and the Broomielaw. 
It is difficult to determine whether the wind produced a de- 
cided effect on the velocity of these tides. By adiscussion which 
was attempted, it appear.d that on all the days in which the 
easterly wind prevailed, compared with all the days on which 
the westerly wind prevailed, there was a difference of one mi- 
nute more and of one minute less than the mean; the tide 
being accelerated by the coincident wind and retarded by the 
opposing one. 
The continuation of this series of inquiries will be given in 
the next Report. 
Description of the Tables containing the original Observa- 
tions of the Waves in Artificial Channels made tn 1837. 
Each of the first ninety-three tables contains the history of 
a single wave, including the condition of the fluid previous to 
generation—the method of generation—the volume of the wave 
at the commencement of its path—the height of the wave at every 
transit—the interval between its transits—the space described, 
and the time occupied in describing it. The methods of ob- 
serving and the observers’ names are given, for the sake of authen- 
ticity, except in the first four experiments, which are not suff-: 
ciently perfect to form by themselves the grounds of any im- 
portant conclusions. 
The approximate depth of the fluid is given at the head of 
each table in the first line for convenience of reference. 
The corrected or true depth of the fluid at the commencement 
of the observations is given immediately above the columns of 
observations, where it is given as “ corrected statical depth =”, 
The “ observed stutical level” is the indication of the height 
of the fluid on the scale of the glass indices or gauges represented 
in Plate I., taken from an arbitrary line and affected by an index 
