Ruins of Desert Cathay 44 - Surveyor Rai Ram Singh with Jasvant Singh starting from Kok-yar - Rai Ram Singh was the professional surveyor assigned to Stein from the Survey of India. His dietary rules prevented him from eating with the English or Moslems, hence he had his own cook, Jasvant Singh. Midway through the second expedition Ram Singh became too ill to continue and was replaced by Lal Singh.