Solution

157. Former statements of witness may be proved to corroborate later testimony as to same fact. 158. What matters may be proved in connection with proved statement relevant under section 32 or 33. 159. Refreshing memory:- A witness may, while under examination, refresh his memory by referring to any writing made by himself at the time of the transaction concerning which he is questioned, or so soon afterwards that the Court considers it likely that the transaction was at that time fresh in his memory. 160. Testimony to facts stated in document mentioned in section 159.