We have continued our investigations on particle losses from cesium plasmas in the Wendelstein stellarator. At the Culham Conference we reported on measurements 1 obtained in a stellarator magnetic field with helical windings of type I = 2. 2 We found particle-loss rates to be much less than the anomalously high "pumpout" losses usually encountered in stellar ator s. 3 Moreover, the relationship observed between ion input flux and the resultant particle density distribution was in agreement with calculations which assumed resistive diffusion across the magnetic confining field and recombination on the insulating surfaces of the supports of the plasma source, the latter constituting the predominant loss process. 4 In recent experiments, which will be described in this Letter, surface recombination losses within the plasma volume were made negligibly small by minimizing the surfaces of the supports of the plasma source. In this way we have been able to show the radial transport of the plasma to be governed by resistive diffusion.Our machine has a race-track shape with an axial length of 319 cm and a tube diameter of 5 cm. The main magnetic field can be pulsed up to 15 kG for about one second; the 1 = 2 helical windings yield a maximum angle of rotational transform of 0.477 at a main field strength of 11 kG. A small correction field transverse to the magnetic axis can be applied from two pairs of auxiliary windings which encircle the machine. The plasma is produced by contact ionization on a hot tantalum sphere, 5 mm in diameter, which is hung from a thin (25 /im in diameter) tungsten wire. The emitting sphere is heated by bombardment with a beam of energetic electrons from a gun outside the plasma volume. This electron beam is switched off during the time of the experiment and the emitting sphere is allowed to assume its floating potential. The total ion inpu: flux is determined from the ion saturation current drawn when a voltage is applied between the emitting sphere and the vacuum vessel with no magnetic field present. Two small cylindrical electrostatic probes (50 /im diam, 5 mm length)