results dedu 
“from theory. They form but a contribution to this interesting branch 
386 Proceedings of the British Association 
Extracts from the Proceedings of the Twentieth Meeting of the British 
’ Association, held at Edinburgh, July, 1850.* 
Section A.—MaTHemaTicaL aND Puysicat Scrence. 
‘On Atlantic Waves, their Magnitude, Velocity, and Phenomena; by 
oo 4 Dr. Scoressy. 
Durine two passages across the Atlantic in 1847-8, I had opportuni- 
i c 
advaniageous agreement or accordance for observations on their width 
and velocity. ‘These observations | shall extract, in their order, from 
my journal kept during the homeward passage. rst observation 
h reco:ding is under the date of March.5, 1848, when the ship was 
in latiiude about 51°, and longitude (at noon) 38° 50’ W.—the wind 
then being about W S.W., and the ship’s course, true, N. 52° E. At sun- 
"set of the 4th the wind blew a hard gale, which, with heavy squalls, had 
sail forward. ‘The barometer stood at 29°50 at 8 p. m., but fell so 
rapidly as to be at 28-30 by 10 the next morning. In the afternoon of this 
day I stood some time on the saloon deck or cuddy roof,—a height, with 
continued during the night; so that all sail was taken in but the storme 
¥ 
masses of water possessed a height of considerably more than twenly- 
four feet (including depression as well as.altitude,) or, reckoning from 
osed e 
