After all is said and done, the most practical of all rat-traps is my little "Special Steel Trap," which catches one rat at a time, but its cost is so reasonable that you can have a dozen of them for the price of one of the big wire ones. It is an utter impossibility for the rats to avoid being caught if the traps are properly placed, and it can, with ease, be so nicely adjusted that the gentlest touch of a rat's paw will insure his immediate capture. And when Mister Rat has put down that little paw of his he is as securely held as if he were nailed to the floor. I have over ten thousand of these traps in use in my professional rat-exterminating operations and sell barrels of them. The larger the space to be covered the more traps are required, and, where it is possible, remove your rat as soon as caught. Place the traps in the natural run of the rats; around swill-barrels, along the walls, etc. Its chief practical beauty is its innocent appearance, as there is nothing about its placid surface which tells the rats of its unerring aim. With every trap we furnish a chain-attachment and fastener; the latter is for the purpose of securing it to the flooring and prevents the rats from dragging the trap. As this Special Steel Trap is a boon to large institutions, ships, shops, factories, stores, hotels, office-buildings, flat-houses, warehouses, private dwellings, slaughter-houses, etc., etc., I quote the following prices on it, which are net: Per dozen $3.00 Per hundred 20.00 II.--POISONS.