Farmers have been too much under the rule of professional ditchers. Having no well defined ideas of good drainage work, they have left the matter largely to the judgment, or rather the cupidity of the ditcher and the layer. There are many first-class, conscientious workmen, but it is to be regretted that the average ditcher does work far below the standard of excellence. If by some magic means the conditions of many of the drains in our State could be spread out before us in open view, it would be a wonder to this convention that tile drainage has wrought out such favorable results as it has. We would see tile laid on the siphon plan, good and poor joints, faulty connections, ditches crooked enough to baffle the sagacious mole should he attempt to follow the line. Patience would scarcely hold out to enumerate the exasperating defects of much of our drainage work. Nothing can overcome the egotism and self-confidence of the average ditcher except the constant supervision of the employer. Such work is so soon covered, and errors placed beyond immediate detection that nothing else will suffice. To guard against such mistakes, know what work you want and how you want it done, and then look after it yourself or employ some one in whom you have confidence to superintend it. When any mistake is guarded against, from beginning to end, the work will not be too well done. The cut-and-cover, hurry-scurry methods of doing things, common on some Western farms, will not do in drainage work. Carefulness in regard to every detail is the only safe rule to adopt. MISTAKE NO. 7--FAILURE TO MAKE OPEN DITCHES FOR WATER COURSES.