[.N. Y. Tribune.
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Ihe Grappler.-We have already alluded to this xtraordnarysteamer, whose machine " IS so lngeniously constructed. on plan eonsTiseda byT M. Ferpilleux, as to neutraiize. at small cost, the resistance opposed bv strong current, to the ascent of rivers. Its success has so commended 1t to public favor Ill France, that 1t seems destined, if not to become Tn all respects the model of boats to be hereafter constructed, for the conveyance of heavy freights up rapid streams, at least to effect complete revolution in the ma- chinery that propels them

 i'hls boat IS employed on the Rhone, in transporting iron ore from Givors to La voulte. Its dimensions must be considera- ble, as it is said to displace upwards of four hundred tons in weight of water. It resem- bles, in most particulars, the other Rhone steamboats. Like them it has wheels fitted to the sides, and moved by steam. They are not used, however, except on rare occa- slons, when the grapple cannot reach the bottom of the river

 The peculiar mechanism invented by M serpllleux, consists of huge wheel, nearly swenfy-two feet in diameter, garnished with .eetn, and fixed to the extremity of a lever rms wheel IS put in motion by a series of cog-wheels. The lever to which it is attach- ca is capable of describing an arc of many degrees, and thus raises and depresses this wheel, which it supports, accordingly as the oed oi the river, to which its teeth fasten in me ,. efIort of traction. is more or less deep. ms apparatus Is placed forward, and occu- pes space left clear in the frame of the boat

 The teeth of this wheel can reach to a depth aol twenty-six feet, and there grapple effect Hely. But should the river be deeper, whici V he khone is very rare, they put in motior me wheels attached to the Hanks, and proceed ike ordinary stealnhoats.

 This moveablo wheel, which rises ant hlls according to the depth of the Rhone, i. generally above the level of the deck, ant sSus indicates, with perfect precision, tn, flare of water iii the river.

 Journal ef Commerce.