During the fifties, there was a resurgence of interest in the Cherenkov effect both in its experimental and theoretical aspects. Professor Majumdar was fascinated by the problem, because it was perhaps the only classical electrodynamical derivation that fetched Nobel prizes in a world dominated by the Quantum. As was usual with him, he approached the problem in an absolutely novel way. Instead of studying the Cherenkov radiation field in the rest frame of the medium through which the charged particle whizzes by, he decided to jump to the rest frame of the charge. The great advantage of this approach is that the electromagnetic field becomes static and can be described by just two scalar potentials, which was a totally new formulation of the problem. However, the flowing medium now acquires a complicated magneto-electric character. This however came as a blessing in disguise, because it led to a discovery in the electrodynamics of crystalline media. Majumdar found that a most general doubly anisotropic medium with tensor permittivity and tensor permeability with non-parallel principal axes could sometimes behave like an 'isotropic' or 'uniaxial' medium as far as the structure of the Fresnel wave surface is concerned. Armed with this insight and his new formulation of the problem, he derived, for the first time, a closed expression for the Cherenkov output in a biaxial crystal in terms of elliptic functions.