152 REPORT—1846. 
Symmetrical Wave.—The crest No. 5 forms the second subordinate maxi- 
mum on the anterior slope of the great symmetrical wave (see plate 2 ap- 
pended to Sir J. Herschel’s Report, 1843, and plate 3, illustrating the volume 
of Reports, 1845). The first strongly developed rise and fall on the anterior 
slope of the symmetrical wave appears to be a small wave riding in the 
trough (A%). 
It appears highly probable that the large wave from the N.W. possessed 
both a broad crest and broad trough, with a very slow progressive motion. 
The anterior slope of crest No. 4 appears to have commenced riding over 
Christiania on the 10th. 
November 15, 1842. 
Crest No. 5. 
NN ee 
Crest No. 4. 
4 Ogata are apre mmr sO 
Anterior slope, Crest No. 5. Posterior slope, Crest No. 5. 
Max. Orkneys.... 30°01 Max. Orkneys.... 30°01 
Christiania, 29°70 Shields .... 29°83 
Belfast .... 29°82 
Plymouth .. 29°64 
London.... 29°62 
Bristol .... 29°61 
Pats ee 29°55 
Cark 17,22 29°37 
Slope.—Line of the greatest diminution of pressure. 
Posterior slope, Crest No.5. Orkneys to Cork.. *64 
Currents.—W ind on anterior slope of Crest No. 4, N.E. 
P posterior As As 5, S.E, 
The southern coasts of England exhibit a S.W. wind. 
The progression of the crest No. 5 in the same direction as crest No. 1 
(see Nov. 2), is very discernible; there can be no doubt of its being a wave 
of the same system. 
Symmetrical Wave.—The barometer at London has fallen from the pos- 
terior slope of No. 5, but the anterior slope of No, 4 is gently raising it. 
November 16, 1842. 
Crest No. 5. 
N.W. S.E. 
Crest No. 4. 
S.W.—____N.E.. 
Anterior slope, Crest No. 5? Anterior slope, Crest No. 4. 
Max. Orkneys.... 30°22 Max. Orkneys.... 30°22 
Christiania.. 29°86 Belfast .... 20°06 
Shields .... 30°03 
London.... 29°79 
Bristol .... 29°78 
Plymouth .. 29°70 
Corks: ..2eea2ore8 
Paris: ch.':im 29°50 
Slope.—Line of greatest diminution of pressure. f 
Anterior slope, Crest No. 4, Orkneys to Paris.. *72 f 
Currents.—The winds this day appear to be those due to the anterior slope 
of crest No. 4, or resultants of that and the posterior slope of erest No. 5. ‘ 
«2suntnige nia tls pel 
