We must expect, with the great advances photography has lately made, to know more of this part of our subject (which we may call solar meteorology) at the next spot maximum than ever before, and by that time it may be hoped that some of the wonderful forms described above so imperfectly will have been caught for us by the camera.
In the notice in our issue for July 27 of a new screw cutting lathe made by Messrs. Goodnow & Wightman, the address should have been 176 Washington street instead of 128, and the diameter of the tail spindle, which was given as 5/16, should have been 15/16 inch.
The Olympia (Wyoming Territory) Standard announces that a company has been formed there to bring ice from a glacier. The deposit covers a number of acres, is seventy or eighty feet deep, and is supposed to contain a hundred thousand or more tons, some of which may have been there as many years. The ice can be cut and sold at one and one half cents a pound, and by the ship load at five dollars a ton.
[ MECHANICAL PUDDLING IN SWEDEN.]
The accompanying engravings, which we take from Iron, give plan and section of the puddling apparatus invented by Mr. Oestlund, as used at the Finspong Ironworks. The gas generator, A, is of the common Swedish type, as used for charcoal. The tube, k, conducts the gases into the refining pot, a. This pot has a lining of refinery slag, which is melted, as the apparatus revolves, to get it to adhere to the sides. The revolution of the pot, a, on its axis, d, is effected by the action of the beveled wheels, b and b', and the pulley, c, which takes from an iron chain the power given off by a turbine. The spindle, d, is supported in the bearings, e and e', c carrying a pair of trunnions which form the axis of oscillation, and allow the apparatus to rise or fall, the whole of this mechanism being supported on the plummer blocks, f f. One of the trunnions, e'', is prolonged so as to form the axis of the beveled wheel, b, and the pulley, c, the latter sliding along the trunnion so as to put b in or out of gear. The bush, e is tied by means of the stay, g' to the upper end of the toothed segment, g, the lower extremity of which is connected with the second bush at the end of the spindle. By means of the pinion, h, revolving on standards, i i, and the segmental rack, g, the pot can be raised or lowered without interfering with the action of the beveled wheels.