One of the most useful ar.d original inventions of the day is "Eaiues Ilydraulic ; Power and Pump," which has recently been put in operation by t!ie inventor, Lovett Eames, of Kalamnzoo Micb., at Watortown, Jeffersou county, N. Y., whero, with only about one hundred inches of water under a twelve fuet head, it raises through one singlo acting foreing pump and ten inch pipes, 23,000 gallons of water per hour, into a resorvoir one Dlile and a quarter distant, the bottom of wliich is 212 feet above higli water in the pond; and by enlarging valves it would raise 40,000 gallons per bour using ouly 200 iucb es of water. The Power or Engine is a substitute for water wheels and its operation seems to justify the invcntor's eonfideiit prediction, that it will supercede water wheels whcrever economy iu the use of water power, durability, or uuiformity of power and speed are desired. The combined Power and Pump, (usually spoken of is the pump,) are tlie application in a scientifie manner entirely njw, ifpriic pies previously undeveloped. It is an exceedingly compact and simplo deviccentirely original,for elevatiug water in all places where water can be elevated by the power or weight of water, aud it is well adaptod for raising water for cities, villages, Rail Road stations, buildings, or farms, or any other purposes; and for any quantity or head oí water from the loast to the greatest; and is capable of using all the water and kead iu aoy place without waste. It is operated by tho lifting pressure of a head of water uuder a pistou of' large arca exerting it3 power upon a piston above it of smaller area, which acts as the plunger of a foreing pump; the relativo size of tho pistons being to each other very nearly as the height to which the water is to be raised, is to the head of tho water aeting upon the larger piston ; and the sauio proportions exist between the water raibed, and tbe water used to raise it whatever the q,.antities may be. The gist of the Improvcment, or tho great diffieulty over come in the invention consista in the devioe for making the Engine or Power autoinatic, - in eausing it to open and close its valves at the proper time, aud to continue to change and repeat its action en'.irely by tho pressure of the water upon the valves, without any mechanical eonnection between the valves, or any wheels, cranks, levers, springs, or gears of any kind. It is difficult :o see how it could be reDdcred moro compact, simple or durable It has no wbeels, journals, stuffing boxes, glands or joints to lubricate, wear, orgetout of order; aud all the mutions being perpedicular there is uo side wear upon pistons, valves, or anything else. All tho weight of all tho working parts rest entirely upon and mostly in water, nnd they are subject to very little wear, arenot Hable to aoiangemeut, and the Pump requires very little or uo attention or superinteudence. This Pump is vastly superior in every respect to any thiug hereiofore known. - It saves a large. portion of the expense of constructing both power and pump - saves neariy all the expense of running the pump, superinteuding, and keeping it in repair, saves a large percentage of the water used to elévate with by elevating a much larger proportion of water than any other pump. It is certain in its action, durable, easily cxamincd through - out, inside aud outsife, and any of its interior ariaugements easily roplaced - It wastes uo water or head, and its size aud proportions will vary to suit any circumstances. If but a few inches of head, or but a few gallons of water per day can be obtained it will elévate the same quantity of water in proportion to the head aud supply ; and it can use without loss the whole power or weight of hundredsof feot head as no form of water wheel oan. It will oporate perin;iucutly wherever a water ram could act temporarily, raising a much greater portion of the water: and will opérate well where tho fall or quantity of water is not sufficient to start the ratu; aud the extent of its capacity is only limited by the extent of tho water power where it is wanted, it being as practicable to use the whole of a large stream as a small one - to raise water for a large city, uiillions of ga'Ions per hour, as for a small dwelliug or farm yard if the head and power are sufficieut. Last fall Mr. Eiimes had such a pump in operatiou at Kalamazoo, throwing water 160 feet high to the Lunatic Asylum; aud it will soon be working agaiu. He is putting one of his Engiues or VVaterPowers iuto his shop there to propcl a variety of machinery, and this will givethepublic an opportunity to witness the operation of the Pump aud of the Water Power, arately - a curiosity wcll vrorth going to see. He is manufacturing, and will keep for sale suiall pumps for farms, buildings, &c, and bas orders for sever.il Water Fowers, anda largo uumber of Pumps of various sizes. Mr. Eameg-will contract to put in Engines or Pump wbere they are wantod, and warrant thera ; and by having tbe head or fall the quautity of water to be raised, and the heiglit of the reservoir given, hewill funiish an csiimate of tho expens of putti. ig iu his Pump. Those wishing to raiso water by water power would do well to seo or enquire into the inerits of th is iuvention boforo incurring any expense for Water Wheels or Pump. By writing to Georgc C. Shennan, Prosident of the Wator Commissiouers, and of the Watertown Bank and Loan Co., at Watertowu, Jefferson Co , N. Y., or to any of tho village, or County officers, or business men of Watertown, iuformntion rclatiug to the Pump there, and its operations and merits can bo obtained ; but nothing could give so goed an idea of its oapacity as to seo the Pump work. Aun Arbor, March 18, 18G1. L3L" The Republiciin Word Cnncnses are called to be held on Saturday evening, and their Ciiy Convention on ' Tb'irfday neï, ut 9 o'oVefr, P. Jf .