We must, however, make known beforehand, in connection with intra-mural works, that, attached to the main jail, yet distinctly separated from it by high walls and a guarded gateway, was a "work-yard," in which were built shops for carpenters, blacksmiths, coopers, wheelwrights, sawyers, stone-cutters, and turners in wood and iron. [Illustration: GOVERNMENT HOUSE, SINGAPORE, COMPLETED. _McNair._ _Plate XIX._] In one part of this yard was also a machine shop, in which were fitted lathes, punching and shearing machines, and a bolt and nut machine, also a band saw and a circular saw table. To drive this machinery a 12 h.p. engine was used, and this was placed under the charge of a convict who had been employed in the engine-room of a P. and O. steamer, and had gone through his probationary period in the jail. Added to these machines was one of Blake's stone-crushers to break stone of various gauges for metalling the roads of the town. This was the first Indian jail, and we might even go so far as to say it was amongst the first of any jails, where convicts were employed in connection with steam power. We had, it is true, an engine to be worked by manual power, for six or eight men abreast, to drive the circular saw, but it did not answer. It was intended as "crank" labour for the convicts. When Dr. Mouat, the Inspector-General of Jails, Bengal, wrote his annual report of 1864-65, he said: "I have suggested the introduction of steam machinery for the spinning of jute yarn, in order that all prisoners sentenced to rigorous imprisonment may never be without the hard labour which the jail is bound to provide for them. In this, as in most matters connected with the organization of prison industry, I have been anticipated by the authorities at Singapore, there being a steam saw-mill in use at the Singapore jail, and a pug-mill employed in the preparation of the clay used in the brick and tile manufactory." The carpenters made every necessary article required for the public buildings in progress; even the pulpit, reading-desk, and interior fittings for the cathedral were the work of their hands. The blacksmiths had four smithies, and forged, cast, and prepared all kinds of ordinary iron work found necessary. The coopers made buckets, tubs, and all the casks for storing cement, and for other jail purposes. The wheelwrights made all the carts, barrows (hand and wheel), and the hack-barrows wanted at the brick kilns. The stone-cutters turned out the mouldings, mullions, capitals, cills, steps, and all that was essential in our building operations.