Tlie contract, for crecting the adclitions which w ! 1 1 complete tbe Mechanical Laboralory, and uiake it one of tlic best looking buildings on the campus, has just been let, at an expense ol $11,GOO, and as will be seen by tbc accompany i n g cut thestructure will be a pretty Ki od looking olie, llilililii; runsiderably to the not altogetlier lovely class of buildings now compoeing tlic groat Uuivcrsity of Michigan. At the tune of erecting the present Laboratoiy bafldlng the CmjUKU had n complete dcscriptlon, giving the ground plan. The following descriptlon is of the new portion to bc erected now : The central building ia 32x50 feet in size, two storles and a basement, the latter for atorare purposes. FirUfloor- Engine room, wasli room and office; second floor- Draftlng room?, and blue print room. A high tower at one corner serves for a large tank for hydratilic work, and adds materlally to the architectural ell'ect. The forge and foundry building is 32x80 feet, divided into two rooms. The forge shop will contain 14 forges, a power liauimer, and steam hammer. The foundry, two cupulo ftirnaccs, brasa furnace and cove oven. Power will bc furnislied by a 35-horse power CorllM pnglne for the raain building, and a 10-horse power engine for the forge, shop nnd foundry. Th building erected two years ago will have additional aparatus aiul c-quipmcnt, tbc basement being fitted up with esecial reterence to experimental work. When OOmpleted this department will be one of tbe most complete of ita kiud in tlie country. No effnrt will be spared to make it all that can be desired by the young enfrineer or mechanic. One of the handsomest features of the experlmeotai laborator? will be the 20horse power engine built by the student8 the past semester.