. Guide to Baltimore & Ohio railroad . he road, one mile from the city, is the CarrolltonViaduct, a fine structure of dressed granite with an arch of eightyfeet span, over Gwynns Falls. A short distance further is thefamous deep cut, remarkable for the difficulties it presented in theearly history of the road. It is ahalfmileinlength and seventy-sixfeet in depth. Eight miles from Baltimore you enter the Paleozoic,Plutonian or Granatic region, and in the gorge through which thePata[»sco flows the granite formations stand out in bold relief. Atthis pointis the Thomas Viaduct, a noble granite str
. Guide to Baltimore & Ohio railroad . he road, one mile from the city, is the CarrolltonViaduct, a fine structure of dressed granite with an arch of eightyfeet span, over Gwynns Falls. A short distance further is thefamous deep cut, remarkable for the difficulties it presented in theearly history of the road. It is ahalfmileinlength and seventy-sixfeet in depth. Eight miles from Baltimore you enter the Paleozoic,Plutonian or Granatic region, and in the gorge through which thePata[»sco flows the granite formations stand out in bold relief. Atthis pointis the Thomas Viaduct, a noble granite structure ofeight elliptical arches, each of sixty feet chord, spanning the Pa-tapsco at a h-iglitof sixty-six feet above the river, and of a totallength of seven hundred feet. Upon this bridge or viaduct is theWashington liranch of the Baltimore and Ohio Railroad. Three miles from the Relay House, on the main stem, is the Pat-terson Viaduct, a fine granite wcuk of two arches of fifty-five feet,and two of twenty feet span on tlio Hon. JOHN W. GARKETT,President Baltimore & Ohio Railroad.
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