Complex sentence: The boundaries of the district included the Great Dividing Range from the source of the Werribee River to the north-eastern branch of the Saltwater River near Big Hill, then from the Saltwater River to the south-western corner of the parish of Bulla Bulla.
Split into simpler sentences: The boundaries of the district included the Great Dividing Range from the source of the Werribee River to the north-eastern branch of the Saltwater River near Big Hill. Then from the Saltwater River to the south-western corner of the parish of Bulla Bulla.