Three surgical casualties were admitted on this day .
Arrangements were made for Army casualties to be admitted as necessary .
On this day the Chinese hospital coolies again threatened to leave , their grievance being that they were not permitted to join their families in the tunnels under the hospital during the night . Finally , in order to prevent them leaving , permission to join their families at night had to be conceded . As a number of these Chinese were employed as crew of the trailer pump , it was arranged that the hospital pharmacist and one member of the sick berth staff should learn to work this machine in case of an emergency . This foresight proved to be wise , as a time came when the Chinese crew of the trailer pump was no longer available .