Complex sentence: In 1880, they were followed by another eleven locomotives, built by Neilson and Company and numbered in the ranges from W33 to W38 for the Western System and E10 to E14 for the Eastern System.
Split into simpler sentences: In 1880, they were followed by another eleven locomotives. These were built by Neilson and Company and numbered in the ranges from W33 to W38 for the Western System and E10 to E14 for the Eastern System.