This paper presents measurements of the polarization of light in the tails of the comets Arend-Roland and Mrkos, made in the total photographic light. Results given in Tables II and V indicate that the tail of the Arend-Roland comet contained a substantial dust component, while the polarization in the tail of the Mrkos comet can be explained predominantly by pure molecular emission.
The paper shows that the deviations of the plane of polarisation from the normal direction found by us are due to scattering of the polarised lights of the corona on ice-crystals in high layers of troposphere. Nevertheless, the deviations in the equatorial regions can hardly be explained in this way, and they seem to be real. and Součástí článku jsou fotografie s popisky v angličtině (nestránkováno)