Delay condoned. 2. Leave granted. 3. This batch of civil appeals is directed against judgments dated 22.11.06 and 8.1.07 of the High Court of Guwahati, Assam, in appeals under Section 260A of the Income-tax Act, 1961 in respect of assessment years 1988-89, 1989-90, 1990-91 and 1991- 92. 4. What is the meaning of the expression “depreciation