Superintended by Drusie, they all worked very busily at the ammunition, and as they kneaded cannon-balls and pellets they laid out a plan of attack for the following Tuesday.  Jim was of the opinion that they never took enough advantage of the shelter afforded by the thick and almost impenetrable bushes that grew on one side of the fort, and he proposed that while two of them made an attack in the open air, he or Drusie should lie concealed, and if Hal could be drawn out in pursuit they might get a chance of slipping in during his absence.