although it was a mainstream practice to use this bittern as a coagulant before the war (calcium sulfate (sumashiko ) was used by some makers ), it soon became difficult to obtain the bittern because it was designated as controlled goods . 戦前までは、このにがりを凝固剤に使用するのが主流であったが（一部では硫酸カルシウム（すましこ）も使われていた）、やがて統制品に指定されたため入手が困難となった。
making a group with five to ten families , it urged their solidarity and development of local autonomy , and was used for mobilization of citizens and obligatory supply of materials to the government , distribution of controlled goods , and defense activity against air raids during wartime . 5軒から10軒の世帯を一組とし、団結や地方自治の進行を促し、戦争での住民の動員や物資の供出、統制物の配給、空襲での防空活動などを行った。
