ON THE HARMONIC ANALYSIS OF TIDAL OBSERVATIONS. 43 
the latter, it will be better to abide by the former, and stop with the row 
numbered 310. 
With regard to the quaterdiurnal and terdiurnal tides, it does not 
signify where we stop; but it seems more reasonable to stop with the 
exact year of 365 mean solar days. These tides are called MS, MN, 
MK, 2MK. 
Schedule II. 
Periods over which the Harmonic Analysis should extend. 
Tuitil of series | | Nomber of day and hoor of cat day 4 To 20" of ac peal 
S 369% 23h 3684 23h 
M 357 23 369 1 
K 370 23 | 368 23 
| 340 23 358 15 
L 353 23 358 14 
: 333 23 350 8 
d Bd. 23 350 8 
oN 333. 23 358 2 
T 369 23 369 11 
355 98 354 11 
or 370 23 or 369 11 
OSM 366 23 353 23 
0 343 23 368 23 
P 368 23 368 23 
d 342 23 329 3 
or 370 23 or 596 «1 
Q 310 23 347 0 
In the second column the numbers are given to the nearest mean 
solar hour. 
