This document discusses the constitutionality of delegated legislation in India. It outlines three periods: when the Privy Council was the highest court of appeal until 1949, the constitutionality was uncertain; in the case R.V. Burah in 1869, the Calcutta HC declared a section unconstitutional for delegating legislative power but the Privy Council reversed this; and when the Federal Court became the highest court, in the case Jatindra Nath Gupta V. Province of Bihar it held that the power of extension with modification given to the provincial government was ultra vires or beyond its power.