Show the great severn junuel first train goes 11 the clr it paige trains passed through the hie grauntle tube linking the iho shores and Gloucester shire on wednesday worrill Ig before those on board quite know knew where they hoy were a shrill whistle if sudden darkening fur for it was now nearly broad daylight aud and we e aro loll 1011 in told lold them they were if in and rushing down a clearly decline towards a point a 11 hundred feet below the bed of tile broad estuary in a trice watches were weir e out and win dolIs down the first to keep time and tile tha other 1 to test the ventilation the I 1 offish inrush of tile the ley cold air as clear anti and pure as the trip across WAS being made in the old way over instead of under the channel showed the latter was nil all right tile the submarine journey if such it may be called proved to be 10 more liken like a run through a pretty deep lulling cutting llian ban through it 11 tunnel four and add it quarters qu Artora tulle lullo long ions ru for about throe minutes and a half arler after eute entering ring thero there wa was wai i no mistaking the fact that a sharp gradient was being descended then a momentary as the train passed over tho curve of the are arc for the tube tuba dips 1119 in ili the can center Z er and then the tha loco locomotive lye at an ever decreasing L speed peed climbed illin bed tho opposite gradient grad lefft to emerge once mor more 13 into daylight in eight minutes 8 11 and forty nine ger seconds ands As before b remarked the tha venella tion of atho the tunnel is little short ol of per perfect during the tha construction of the work a tin fan IS 18 feet in dlamater diameter discharging cubic feet or of air per ni minute louto was used this has now been replaced replace by a an 40 feet in lia and yi 12 feet wide madi on do he same HI those used at the laversey and a portion odthe of the metropolitan ro I 1 tile the tunnel Is 1 2 ag 6 ft feet et wide anti anil LO 20 the bec eec t dign alg n from I 1 alie it e d double HUB i to the rown crown ot of thu tho areli arch inside tile brickwork the rails are ara laid on adeep er CM tho the tunnel has bag been lined throughout with bricks sot rot in compit find no less lesa than ihan 00 bricks have been in this ibia work ork this vitrified Qed fied brick brici wa wall it ilas ja a thickness or of 3 feet in the thobro crown wn of the arch benca beneath th tile lie shoots hoota a but as the tunnel rises from this lowest point on a gradient one in 00 one way lay and ono one in toward the tha Gloucester shire side this thickness is gradually reduced to 2 feet 3 lin in lies ches the I 1 total length of tile the severn tunnel 11 I 1 miles yards the st colhard tunnel Is aj ti miles filles moot hoot cents tunnel 1 aj antles arlberg tunnel austria Q gi miles there is a tunnel in massachusetts 41 miles tile Tun tunnel nelon on the london and is 3 miles long lot 19 rod and the box tunnel rather lobs but lie special feature of tho the severn tunnel lies in it ihn file fact tint that 2 at milet of it have lieen been constructed from 45 feet to tit leet below the bed or of a rapidly flowing ildia estuary offering lait which maka inake it tile most remarkable tunnel in ill the file Aorl il |