Edinburgh: Neill & Co., 1934. Preprinted from the Monthly Notices of the Royal Astronomical Society, Vol. 94, No. 5. Softcover. Large octavo. 14pp ([1] 431-443. Light grey wraps; stabbed with string tie. PRESENTATION copy from the author to Dr. F.G. Pease. Laid in is a 3 page ALS from Professor..... More