In Part 4, the opening of the Greenock Railway had a profound effect on the Castle Company as their main competitor on the Rothesay station was absorbed into a new company, sailing in connection with the railway trains. The steamers of the Castle Company were sold, and the new management had a positive effect, with new construction and a re-opening of the Arran sailings. “New boats” was the cry of 1844. “The Clyde.—From the following preparations for the coming summer traffic, we anticipate still farther improvements in the speed of our communications with the watering-places on the Clyde. We are informed that the Castle Company have ordered two new iron steamers, hull and machinery, from Messrs. Caird & Co., Cartsdyke Foundry, Greenock. The Greenock Railway Company have specifications in the hands of contractors for an iron steamer about the size of the largest river-boats,...