130 
SIR Gr. B. AIRY ON THE TIDES AT MALTA. 
G1 + G2+G3+G4— G5-G6-G7-G8 = 4|r, 
*7o4o 
G1+G2 — G3 — G4 — G5 — G6 + G7 -|-G8 = 
‘7o4o 
By these simple formulae, which are very easy of application, the numbers in the 
next section are formed. 
Section IV. — Exhibition of the Tidal Elements at Malta, deduced from the Observations 
of each day by means of the preceding Formulae, with Astronomical and Tidal 
Elements at London, for Comparison with those at Malta. 
The places of the sun and moon are taken from the Nautical Almanac ; the times 
of London high water from the Admiralty Tide Tables. The half range of London 
tide is inferred from the height of high water at London, supposing the mean height 
of water at London to be 10 feet 1-g- inch, which appears to be supported by the 
language of pages 151 and 155 of the Admiralty Time Tables. The Malta observations 
following April 29, 1871, are omitted, the series being incomplete. 
