301. A child who, in the opinion of the judge, does not understand the nature of the oath, may be permitted to testify without that formality, if the judge is of the opinion that he is sufficiently mature to be able to report the facts of which he had knowledge, and that he understands the duty to tell the truth. A judgment, however, cannot be based upon such testimony alone.
1965 (1st sess.), c. 80, a. 301.