156 REPORT—1846. 
Slopes.-—Lines of greatest diminution of pressure. 
Anterior slope of Crest No. 11. Belfast to Christiania .. *41* 
Anterior slope of Crest No. 6. Belfast to Paris........ “38 
Currents.—Wind on anterior slope of Crest No. 6, N.E. 
44 posterior ., syimw igs, UO ESB 
Another S.W. wave now transits the area, and the crest of No. 6 is rapidly 
approaching. 
Symmetrical Wave, three days after transit—London is situated under the 
anterior slope of No. 6 and posterior slope of No. 11, and slightly rising from 
the former. 
On the 15th, three days before transit, London was similarly situated with 
respect to waves 5 and 4. 
November 22, 1842. 
Crest No. 11. 
N.W.——__——————-S..E.. 
Crest No. 13. 
N.W.———_——-S..E. 
Crest No. 6. 
SOW NE 
Max. Cork ...... 29°58 
Belfast .... 29°42 
Orkneys .... 29°43 All under the anterior slope of 
Plymouth .. 29°53 crest No.6. The trough between 
Bristol .... 29°39 No. 11 and 13 is seen at Belfast 
Shields .... 29°30 and Shields, the stations being ar- 
Christiania .. 29°55 ranged to exhibit this. 
London .... 29:28 
PATIS).e yjoaehets 29'13 
Slopes.—Lines of greatest diminution of pressure. 
Anterior slope, Crest No. 6. Cork to Paris ...... “45 
Posterior slope, Crest No. 9. Christiania to Paris.. *42 
Currents.—Wind on S.W. side of trough between crests 11 and 13, N.W. 
A few S.W. directions as Crest No. 6 passes. 
The anterior slope of crest No. 6 is still strikingly developed from Cork to 
Paris ; the trough between crests 11 and 13 extends in the direction of Belfast 
and Shields. 
Symmetrical Wave, four days after transit.—-London is situated under the 
anterior slopes of crests Nos. 6 and 13, The barometer has fallen from the 
posterior slope of crest No. 11. 
November 23, 1842. 
Crest No. 13. 
NWS aes es 
Crest No. 6. 
ee ie 
Max. Christiania... 29°62 
London .... 29°59 
Paris’, .'s2., 20° 
* From a comparison of the St. Petersburg observations, it appears that wave, crest No. 11, 
was a small wave, and that the diminution of pressure, Belfast to Christiania, was compounded 
of the anterior slopes of crests 9 and 11, that of 11 being very small. See Postscript. 
} Under anterior slope, Crest No. 6. 
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