In a recent paper [Nucl. Fusion 1976 16 31], Cohn, Parker, and Jassby discuss the interesting possibility of achieving ignition at low plasma temperatures (e ≃ i ≃ 6 keV, where e and i are the average electron and ion temperatures, respectively) in tokamaks operating inside the collisional regime (C = νeiA/ωbe > 0.1, where νei is the electron-ion collision frequency, ωbe is the electron bounce frequency, and A is the plasma column aspect ratio). Assuming that the linear scaling of the energy confinement time, τ, with density, n, which is observed in present-day devices, will remain valid in larger ones operating within the collisional regime, Cohn, Parker,and Jassby conclude that ignition at the above temperature is possible if the cross-section of the plasma column is elongated. The elongation is necessary to increase the poloidal flux which, in turn, allows higher values of the plasma density. However, their results are optimistic because the effects of the elongation on the MHD equilibrium and stability constraints are neglected. In this note, these effects are taken into account. The new values of the elongation which are needed for ignition in the proposed regime are so high that they are difficult to obtain in practice.