and general teachings referring now to the drawings in detail wherein like reference characters represent like elements or features throughout the various views the ventilated carding roll of the present invention is indicated generally in the figures by reference character 10 turning to fig1 a carding machine having a ventilated carding roll constructed in accordance with the present invention is shown the carding machine includes an input portion wherein fibers are input into a feed roll f from the feed roll f the fibers pass to a lickerin roll l and then are picked up by the ventilated carding cylinder 10 of the present invention carding cylinder 10 carries the fibers about its periphery during the carding operation wherein fibers not shown are carded and cleaned carding interfaces are formed about the carding cylinder in a conventional manner and include a series of revolving flats generally 12 positioned above cylinder 10 the flats include a series of elongated bars having wire clothing thereon for cooperating with the wire clothing not shown on cylinder 10 downstream of cylinder 10 is a doffer roll d which removes or 34 doffs 34 the fibers from the carding cylinder typically in a carding machine the fibers are removed in the form of a batt or web not shown this web is subsequently removed from the doffer by a web removal system generally 14 which could be of conventional design fig2 illustrates a preferred embodiment of a carding cylinder 10 in this embodiment carding cylinder 10 includes a cylindrical outer surface 18 to which metallic clothing such as carding wire is attached the inner portion of cylinder 10 is generally open.