Article 1. The present Law shall, excepting cases as otherwise provided for by other Laws, cover the abatement and exemption of national taxes to be paid by sufferers from earthquake, windstorm, flood, lightning, fire and other similar acts of God (these shall hereinafter be referred to as calamities), special rules applicable to the assessment of taxable standard of, and the filing of returns concerning the tax (including applications for reinvestigation) by the sufferers, and the deferred collection of taxes thereof.