Mechanics' magazine and register of inventions and improvements . tongueing, and grooving,floor-plank, ceiling, &c. It performs thelabor in a workmanlike manner, and, what isunquestionably of much importance, bringsthe plank to an equal thickness and will finish 18 feet of plank per minute,thus accomplishing an amount of labor equalto 35 men, during ordinary working hours, atan expense of about one-sixth the usual is far from being complicated in its con-struction, and is consequently not liable toget out of repair. Three knives are placedupon a cylinder, which revolves about
Mechanics' magazine and register of inventions and improvements . tongueing, and grooving,floor-plank, ceiling, &c. It performs thelabor in a workmanlike manner, and, what isunquestionably of much importance, bringsthe plank to an equal thickness and will finish 18 feet of plank per minute,thus accomplishing an amount of labor equalto 35 men, during ordinary working hours, atan expense of about one-sixth the usual is far from being complicated in its con-struction, and is consequently not liable toget out of repair. Three knives are placedupon a cylinder, which revolves about 2,300times per minute, by which the planing iseffected, and tongueing and grooving by aprocess somewhat similar. Should the loca-tion of the machine make it necessary to propel it by steam power, the shavings wouldevidently furnish a large proportion of thenecessary fuel. The invention seems to beone of practical utility, and cannot fail of an important acquisition, wherever build-ing to any considerable amount is in pro-gress.â:[Lockport Balance.]. New Method or Grafting by Approach.âCut off the stock in the form of a wedge,as in fig. 1, and cut the graft upwards, halfway through, for a sufficient length, as iiifig. 2 ; then place the graft upon the stock,as in fig. 3, and bind it on with bass andclay as usual, taking off a circle of bark the graft and the root, as in fig. 3,m, which will cause the sap to flow throughthe graft into the stock n, instead of its ownroot 0. I recommend this method for graft-ing whenever the stock and the graft are ofthe same size, or very nearly so.â[LoudonsMagazine.] [From the Journal of Health.]Saccharink Aliment.âDr. Prout considersthe principal alimentary substances as reduce-able to three great classes : the Saccharine, theOily, and the Albuminous. The first of these,wiih certain exceptions, includes the substan-ces in which, according to Gay-Lussac and , the oxygen and hydrogen are in the sameproportion as they ar
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