课归场灶有三难。一由灶丁起课。淮南煎盐以鐅,淮北晒盐以池,约征银百余两。灶皆贫民,若先课后盐,则力未逮;先盐后课,设遇产歉,必课宕丁逃。此灶丁起课之难行也。一由垣商纳课。寓散于整,较为扼要。惟灶以己业(试读)...