There was nothing among the devices exhibited at this convention that attracted more attention or received more favorable private comment than a model of Chamberlin Brothers' Patent Apparatus for Tiling. The model only was shown, but working machines are in operation in Iowa, and they are giving excellent satisfaction, as attested by such men as Thos. B. Wales, Jr., of Iowa City, and Daniel H. Wheeler, Secretary of the Nebraska State Board of Agriculture. The apparatus is upon the old principle of the mole ditcher requiring the same capstan power. One team is sufficient to run it. The apparatus is composed of a beam or sill, horizontal in position, and a coulter seven feet long at the rear end of the beam, and perpendicular to it a spirit level attached to the beam, aids in regulating. The coulter can be run anywhere from one to five feet deep. The front end of the beam is provided with a mud or stone boat to prevent sinking in the mud, and with a jack screw for regulating on uneven ground. Attached to it, and following the mole, is a carrier 200 feet long, made concave in form. On this the tile are laid and carried into the ground. A start is made at an open ditch or hole of required depth; when the carrier is drawn in full length a hole is dug just back of the coulter, two by three feet, down to the tile, a stop placed in front of the tile, the machine is started which draws the carrier from under the tile, when it is again located as before, and so on. Different sized moles are used according to the size of the tile to be laid. Any one can easily count up the advantages of this mode of laying tile, provided the machine can do the work it is claimed to do, and of this there seems to be no question, if we may believe the testimony of those who have seen it in operation. DRAINAGE LAWS. The following by Senator Whiting, of Bureau county, was read by the Secretary: Illinois is a good State as nature made her, and drainage is destined to add wealth almost inestimable. Drainage enterprises are everywhere seen--in extent from the small work beginning and ending in the same field, to the levees of Sny Carte, and the canal-like channels through the Winnebago swamps. Drainage is naturally divided into two classes: 1. Individual drainage, where the land-owner has his own outlet independent of others. 2. Combined drainage where one can not drain without joining with others.