118 REPORT—1845. 
TABLE V. 
Barometric Maxima and Minima observed at Munich during the transit of 
a supposed normal wave *. 
No.| Phase.} Direction. | Epoch. moet Rafer. Wave. 
EEE, RR EE a ee ee hE ee ee 
1 | Min. | w.n-w. | March. 18 4 | 380/103 R. 
2] Max.| w.xn.w.| , 18 28 +238 re 1 
3| Min. | weew.| ,, 19 4 ‘171.4, 
ig Pl ee ah ee GY Abeer ea Re cia Cae | 
5 | Max. | w.n-w. $3 19 20 304 I. 3 
6 | Min. | s.w. po i AS 238 ie 
7 | Max S.W. - 21 11 342 Il. 4 
8 | Min s.w. . 22 4 218 Il. 
9 | Max. | s.s.w. * 23 22 “667 III. 5 
10 | Min. | w.n.w. ss 27 «4 “123 A 
11 | Max. | s.s.w Ex 27 23 275 Ill. 6 
12 | Min. | w.n.w. Bs 30 4 218 I. 
13 | Max. | w.N.w. 3 30 18 +390 ip 7 
14 |} Min S.W. 31 14 *027 II. 
15 | Max s.w. | April 110 | 30-095 Il. 8 
16 | Min. | w.n-w. 5 212} 29-884 I. 
TasLe VI.—First Wave from W.N.W. 
Anterior Trough (A). 
Posterior Trough (P). 
Station. |EpochofTransit.| Altitude. |/EpochofTransit.| Altitude. ||Epoch of Transit.| Altitude. . 
dh |Eng, in. d hjEng. in. d h/Eng. in. 
Greenwich .|March 17 18) 29°501 ||March 18 14} 29-721 ||March 18 20 29-682 
Prague....-. » 18 4) 30009 || ,, 18 22) 30089 || ,, 19-1) 30-071 
Munich ..... Ma 18 4} 30°103 eS 18 23} 30-238 " 19 4| 30171 
ee ea BC ot ei ce I 
Co-ordinates. 
Altitude from | Amplitude} Diff. Anterior and 
Station. | anterior Trough.| in Time, | Posterior Troughs. 
ng. in. ho’ P—A. Eng. in. | 
Greenwich . “220 26 ‘l 
Munich ..... 135 24 068 
Prague...... 080 21 062 
It is probable that as the posterior slope of this wave passed off, it was met 
by the anterior slope of the first S.S.W. wave, so that the true posterior trough 
was not observed, the minimuin being anticipated and the readings being 
higher than they would otherwise have been. It is also probable that this 
wave rode on the anterior slope of a normal wave. 
Thesucceeding maxima4and 5, from S.S.W.and W.N.W., passed Greenwich 
and Prague at both stations about the same hour, and Munich within six 
hours of each other. The posterior troughs of both were obliterated by a 
well-developed wave from S.W., interval 37 hours, after which the 2nd S.S.W. 
wave appeared, 
* It appears probable that the maxima recorded in Table III. indicated the crests of 
normal waves. The maxima and minima in this Table are those resulting from secondary 
waves. 
