We have under our constant employ pick makers that know their business, and we are having imported for this purpose a brand of English steel made expressly for mill stone picks. We make three sizes with eyes, unless otherwise ordered, as follows: light cracking, heavy cracking and furrowing. (See price list for prices, weight, &c.) If any points should prove defective (as will occasionally happen) do not have any other maker or smith work on them, but return to us and we will make it satisfactory, and send back at once, as we warrant every one. We have ready for shipment several patent picks, some of which we have tested and describe as follows: Cumming’ Pick. [Illustration: Fig. 1.] Description. [Illustration: Fig. 2.] [Illustration: Fig. 3.] Fig. 1 represents the entire Pick ready for use. In Fig. 2 the pick or blade is shown in connection with the clamp-bar. While in Fig. 3 is given a complete sectional view of all parts of the device. In this Fig. C C represents the head or stock, and G the clamp-bar with its wedge-shaped head H. At K is shown the blade with its upper end bent to fit the notches in the clamp-bar. The device is perfect without the set screw F. In adjusting for use the blade is placed upon the clamp-bar as shown in Fig. 2, and both are inserted within the socket of the pick-head; they are driven firmly into the socket by using. It will be seen that the more powerful the blows upon the stone the more securely is the blade confined within its socket, resulting from the wedge-like form of the clamp-bar. While to remove the blade reverse the pick and strike the opposite end of the clamp-bar on any solid substance, (a small piece of iron placed on the face of the mill stone is most suitable,) when the bar and blade will be instantly released, and another blade can be readily inserted. The blades being of a uniform thickness and temper only require grinding to sharpen. The wearing portion of each blade is 3½ inches; as they are worn by use they can be let down in the ratchet. Ten blades furnished with each. Crossley’ Pick. [Illustration: _Fig. 1_] [Illustration: _Fig. 2_] Fig. 1 is a perspective view, and Fig. 2 a sectional view. This improvement supplies a want long felt by millers, more especially those who have not the convenience of sending their picks to a good blacksmith who understands tempering steel. A is a wedge-shaped plate, which is attached to the handle by a screw shank; B is a piece of metal made so as to partly fold about A, as shown, but leaving a space between A and B, in which the steel bit C is held by a lug formed upon it, which fits into a corresponding recess in the plate B, as shown in the section, Fig. 2.