Molecular clouds in the Perseus arm toward Cassiopeia and Cepheus: ﹩^{13}﹩CO emission integrated over the velocity range −65 to −25 km s⁻¹; there is no emission below −65 km s⁻¹ in the area of the ﹩^{13}﹩CO map. The lowest contour is at 1.0 K km s⁻¹, and each contour is again 1.58 times higher than the previous. The peak intensity is 25 K km s⁻¹.