* four wagons.
  3:36,37  4:28-33 
 * the sons.
   Though the Merarites were the most numerous, yet they had the
   greatest burden, namely, the boards, bars, pillars, and
   sockets, to carry, (ch. 4:31, 32, 48.)  Therefore they had
   double the number of waggons to what the Gershonites had
   assigned them.