I built a one-story addition to the erecting-floor, about 40×100 feet, occupying a space which had before been used mostly as a stable. I divided this into two bays by columns, and provided each bay with an overhead traveler of about five tons capacity, worked by rope loops hanging to the floor. These were also made for me by Smith & Coventry. I ordered from Mr. Moore, of Philadelphia, one or two of the heavy and powerful lathes built by him for turning chilled rolls. I also ordered a six-foot square planer from the Hewes & Phillips Iron Works in Newark, which they made expressly heavy, having become infected with my ideas on that subject. From Pratt & Whitney I ordered one large lathe and one or two small planers, and other tools from several other American makers. In one instance only I was disappointed; that was the case of a 12-foot horizontal turning and boring machine. On examining the blue-prints which were sent me at my request, I was struck with the lightness of the table, and conditioned my order on this being made twice as heavy, which was done. If I had made the same requirement for every other part of the machine, I should have done a good thing for both the builders and myself. The table ran on a circular track, which was superbly designed. This track consisted of a circular trough perhaps 8 or 10 inches wide, and in the middle of it a bearing surface for the table, raised perhaps half an inch above the bottom of the trough and half an inch lower than its sides. This bearing surface was about 6 inches wide and was intersected by diagonal grooves about a foot apart. Oil could stand in this trough above the level of the bearing surfaces. I made a little improvement on the method of supplying the oil. As sent, a dose of oil was poured through a hole in the table, which was filled with a screw plug when not required to be used. I screwed a plug into that hole to stay, and drilled a hole in the bottom of the trough, in which I screwed a ³⁄₈-inch pipe that I carried under the bottom of the machine, and up behind one of the uprights to a higher level, and in the end of this pipe I screwed a sight-feed oil-cup. I provided a drain-pipe, which would maintain the oil in the trough at the desired level, while it was fed to the trough continually, drop by drop, as required. This table came with an imperfectly finished bearing surface. I set several men at work to bed these surfaces properly, and did a fine job of scraping on them. When it was finished, I pulled the table around with one hand, it floating dry on the air caught between the two surfaces. When we came to use the tool it chattered, and would do so however light the cut we were taking; every part of it was too light and vibrated, except the table. After all, it was the best tool of this kind and size that I could have got in this country. If made of proper strength I should have been able to use four cutting tools in the work,