▁almost ▁ 8 4 0 , 0 0 0 ▁people . ▁ ▁Public ▁Health ▁Act ▁establish es ▁Bo ards ▁of ▁Health ▁across ▁England ▁and ▁Wales . ▁▁ 4 ▁July ▁– ▁St ▁George ' s ▁C athedral , ▁South w ark , ▁is ▁opened ▁as ▁a ▁Roman ▁Catholic ▁church , ▁designed ▁by ▁August us ▁P ugin . ▁▁ 1 1 ▁July ▁– ▁London ▁Water lo o ▁station ▁opens . ▁▁ 2 6 ▁July ▁– ▁M ata le ▁Reb ell ion ▁against ▁British ▁rule ▁in ▁Sri ▁L anka . ▁▁ 2 9 ▁July ▁– ▁Young ▁Ireland er ▁Reb ell ion ▁at ▁Ball ing ar ry , ▁South ▁Ti pper ary , ▁is ▁broken ▁up ▁by ▁the ▁Irish ▁Const ab ul ary . ▁▁ 1 9 ▁August ▁– ▁Mor ay ▁F irth ▁fish ing ▁dis aster : ▁ 1 0 0 ▁fish erm en ▁lose ▁their ▁lives ▁in ▁a ▁severe ▁storm ▁off ▁the ▁east ▁coast ▁of ▁Scotland . ▁▁ 2 4 ▁August ▁– ▁The ▁U . S . ▁bar que ▁Ocean ▁Mon arch ▁is ▁bur nt ▁out ▁off ▁the ▁Great ▁Or me , ▁North ▁Wales , ▁with ▁the ▁loss ▁of ▁ 1 7 8 , ▁chief ly ▁em igr ants . ▁▁ 2 6 ▁August ▁– ▁The ▁P ly mouth ▁Bre th ren ▁split ▁into ▁the ▁Ex clus ive ▁and ▁Open ▁Bre th ren . ▁▁ 1 6 ▁September ▁– ▁William ▁L ass ell ▁independently ▁co - dis co vers ▁Hyper ion , ▁one ▁of ▁the ▁mo ons ▁of ▁Sat urn . ▁▁ 1 ▁November ▁–