37. If the cover is left off the can, a piece of cloth or mosquito
netting should be used to keep out insects.
38. If milk is stored, it should be kept in tanks of fresh cold water
(renewed as often as the temperature increases to any material
extent), in a clean, dry, cold room. Unless it is desired to remove
cream, it should be stirred with a tin stirrer often enough to prevent
the forming of a thick cream layer.
39. Keep the night milk under shelter so that rain cannot get into the
cans. In warm weather keep it in a tank of fresh cold water.