To spit or to swallow, that is the troublesome choice facing the reader as he surveys the spate of biographies currently flooding the market. Some are plain slush jobs: biographies of captains of industry like J.R.D. Tata, M.S. Oberoi and H.P. Nanda. They are sustained by their subjects by way of rented ghosts, prepublication deals with the publisher or mass purchase of copies. Unsavoury details are carefully blotted out in the crescendo of splendid achievement.