This paper studies the distribution and density of the dust in the central part region of star formation 2 Mon in the young open star cluster NGC 2244. The ring of the cluster coincides with the ring emission of the Rosette nebula, and the nucleus of the cluster contains five O stars and is in the emission hole. On the basis of data from the author's catalog of B and V magnitudes and the spectra of O-B-A stars, and also data on UBV photometry and proper motions, it is concluded that there is no dust in the eastern half of the ring of maximal emission of the Rosette nebula.