. French railways . 92, 53 kilometres from the start. Henceto post 290 there is a piece of level line, on whichthe speed rose to nearly 60 miles an hour, but thencome 11 kilometres of 1 in 125 to post 279, un-broken except for a few hundred yards at 1 in 400past the station of Frethun, between posts 288and 287. Kilometre 290-289 occupied 40 seconds,and on the whole ascent no kilometre took morethan 44? seconds, so that the speed was nowhereless than 50J miles an hour. The following arethe times reckoned from the start: Posts. Miuutes. Seconds 290 7 47 j 289 8 27:i 288 9 9, 287 9 52 286 10 34i
. French railways . 92, 53 kilometres from the start. Henceto post 290 there is a piece of level line, on whichthe speed rose to nearly 60 miles an hour, but thencome 11 kilometres of 1 in 125 to post 279, un-broken except for a few hundred yards at 1 in 400past the station of Frethun, between posts 288and 287. Kilometre 290-289 occupied 40 seconds,and on the whole ascent no kilometre took morethan 44? seconds, so that the speed was nowhereless than 50J miles an hour. The following arethe times reckoned from the start: Posts. Miuutes. Seconds 290 7 47 j 289 8 27:i 288 9 9, 287 9 52 286 10 34i 285 11 171 284 12 1^ 283 12 45 :< 282 13 28 i 281 14 13 280 14 • 56i 279 15 41V 106 FRENCH RAILWAYS Downhill 74^ miles an hour was soon reached,and then steam was shut off most of the rest ofthe way to the bottom of the descent. Sixkilometres from post 274 were run in exactly 3minutes. The way in which the speed keptalmost absolutely constant down 1 in 125 withonly a very little help from the boiler for a short. EST ENGINE 3152. part of the way gives a good idea of the resistanceof the train, which must under these circum-stances have been a little more than 18 lb. a steam on the resistance no doubt increasesa little, so the generally accepted figure of about22 lb. a ton at 75 miles an hour must be aboutright. FRENCH RAILWAYS 107 One kilometre at the bottom of the descentwas run in 29,-, seconds (76-i miles an hour), theregulator here being well open. This was thehighest speed which we reached.
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