The work of laying the main sewer has commenced. Fifteen men were at work yesterday caulking the joints of the big iron pipe to be sunk in the river bed at the mouth of the sewer at bridge No. 3, over the Hurón. The pipe is jointed on a scaffolding built out in the river over the place where the sewer is to lay. When completely jointed the pipe which will then be 120 feet in length will be lowered into the bed of the river. The 120 feet of iron pipe weighs about thirty tons, and looks much larger than many supposed it would be. A car load of tile from the Ohio Valley Fire Clay Co. is on the ground and more is expected shortly. It is expected that 100 men will be at work on the sewer next week. City engineer Key came near having his foot smashed Wednesday, a heavy section of the pipe falling upon the end of his toes, while he was helping to place it in its position. He limps some now. The men are working hard and the first 120 feet the sewer will be lowered into position this morning. Ypsilanti has been very kind in loaning the city the necessary tools for placing these pipes in position. The little difference of opinión between the council and the board of public works will no doubt be amicably settled so that there may be no delay in pushing the work of construction.