The defendant, indicted for assault with intent to murder, and assault and battery by means of a dangerous weapon, was tried before a jury in the Superior Court. There the trial judge directed a verdict of not guilty on the indictment charging assault with intent to murder. A verdict of guilty was returned by the jury on the charge of assault and battery by means of a dangerous weapon. The case comes here on the defendant’s exceptions.
The jury could have found that in the early evening of November 25, 1971, Thanksgiving Day, the defendant was in a group of youths present on Garfield Avenue in Hyde Park *821 when some words were exchanged between them and one San Filippo, who was attending a party at a house on that street. San Filippo went into the house and emerged shortly thereafter to find that the group was “banging on a car down the street.” He drove his car up to the group and came out therefrom wielding a bayonet and took hold of one member of the group, following which a general melee ensued. One Goodwin, a friend of San Filippo’s who was in attendance at the party, left it to discover the brawl on Garfield Avenue and went to the aid of his friend. After several minutes of combat during which he was subjected to an assault, San Filippo left the fracas in a weakened and bloody condition. Goodwin, having joined in the affair and having been hit on the head by something he thought “was a bottle,” was rendered unconscious, and awoke to find himself lying on the sidewalk, the victim of two extremely serious stab wounds in the abdomen and two in the back, which put him in the Carney Hospital for two and a half months. We discuss the several exceptions.
1. The defendant excepted to the denial of his motion for a directed verdict. The direct and corroborating circumstantial evidence which might have led a jury to conclude that the defendant was responsible for Goodwin’s injuries was as follows. Leon Brady, a friend of the defendant and present at the scene of the scuffle, testified that sometime after the incident the defendant had come to his home and had made a telephone call to the Carney Hospital which Brady had overheard. The call constituted an inquiry about Goodwin’s condition. After perusing his prior testimony before the grand jury, Brady testified that he heard the defendant say, “That is good that he is all right, because I am the one that stabbed him!” On cross-examination Brady stated that he was not sure of what had been said.
Thomas Haywood, another friend of the defendant present at the scene of the fracas, originally stated on the stand that he saw the defendant later in the evening of the day when it occurred but had no memory of the substance of their conversation. The prosecutor then confronted him with *822 a statement he had made at the probable cause hearing in the District Court when he said he heard the defendant say, “I stabbed the kid that was on the ground.” Haywood testified that his earlier statement was not the truth and that he was coached into it. The trial judge then took up questioning Haywood on the discrepancy between his statement at the trial and his earlier statement in the District Court, and inquired if the witness understood what he was saying. To this Haywood responded that he did not understand and, after some reflection, testified that the defendant had told him, “I think I stabbed him,” and that the “him” referred to was San Filippo. The prosecutor on redirect examination then again confronted the witness with his prior statement at the probable cause hearing in the District Court that “Fiore had said to you, T stabbed the man that was lying on the sidewalk,’ ” and the witness affirmed that it was the truth.
A detective, James Solari, testified that after the defendant was arrested and advised of his rights he stated that upon becoming involved in the fight he had pulled a knife from his pocket but had dropped it and had never recovered it.
There was sufficient evidence to submit the case to the jury. The evidence need not be such as to convince a judge beyond reasonable doubt.
Commonwealth
v.
Baron,
*823
It is argued by the defendant that the testimony of neither Brady nor Haywood is to be labeled affirmative evidence since their statements were introduced by the prosecutor as prior inconsistent statements made by these witnesses at prior proceedings. These, it is argued, were hearsay unless admissible for the limited purpose of impeaching the testimony of these two individuals by self-contradiction.
Salonen
v.
Paanenen,
With respect to Haywood’s testimony, he made at first ambiguous and sometimes contradictory assertions. His prior statement in the District Court was then admissible only for the purpose of impeachment. Later on, however, he stated that it was the truth. In so doing he adopted his earlier testimony and it thus acquired full probative value. See
Zimberg
v.
United States,
2. The defendant next maintains error in the judge’s rulings on a number of evidentiary points.
(a) San Filippo testified that on his first encounter with the group on Garfield Avenue he heard someone say, “[LJet’s whip this car,” to which he responded, “You will have to whip me first.” The defendant complains of the admission of this testimony. The testimony, however, was not hearsay which is confined to “extrajudicial utterances . . . offered for a special purpose, namely, as
assertions to evidence the truth of the matter asserted. ”
Wigmore, Evidence (3d ed.) § 1766 (1940). See Hughes, Evidence, § 453 (1961). The statement complained of here was not offered in support of the truth of any matter asserted herein but simply to demonstrate the state of mind of the group gathered on Garfield Avenue and of San Filippo. This was relevant in explanation of the circumstances preceding the encounter which culminated in the assault.
Hartnett
v.
McMahan,
(b) Error is claimed in the limitation by the judge of the cross-examination by defence counsel of Leon Brady. On direct examination the judge had interrupted an answer from him concerning the telephone conversation of the defendant which Brady had overheard. When Brady tried to testify
*825
what he “thought” he heard, the judge stated, “Not what you thought. What did you hear?” On cross-examination defence counsel was able to demonstrate that the witness was uncertain as to the exact words that he heard. He then pursued his interrogation by asking the witness whether he heard not, “I am the one that stabbed him;” but “I am the one they say stabbed him.” Here the Commonwealth’s objection was sustained. A similar result followed an attempted question as to whether “there [was] anything else that you thought he might have said.” It is elementary that a witness need not be restricted in testimony to matters of which he is absolutely certain, and that his testimony may be guarded by such terms as “I think,” or “I believe.” Wigmore, Evidence (3d ed.) § 658 (1940). It is equally clear, however, that the most helpful evidence is specific recollection of specific observations rather than vague impressions. As the “controlling mind at the trial,”
Commonwealth
v.
Haley,
(c) The defendant’s complaint of the employment of leading questions in the examination of the witness Ridge is without merit. The sound discretion of the trial judge governs on the extent to which one may lead his own witness.
Guiffre
v.
Carapezza,
3. Finally, the defendant alleges that the judge demonstrated bias against him and deprived him of that fair and impartial trial guaranteed by art. 29 of our Declaration of Rights, and the Fourteenth Amendment to the United States Constitution. The complaint is based on allegations of improper pressures exerted by the judge on Brady and Haywood to conform their testimony to the earlier statements alluded to above. It appears that in the case of Brady the judge dismissed the jury and questioned him on his prior testimony and had him read the grand jury minutes of it. Following this, Brady affirmed that he would testify in the same manner at the trial.
In the case of Haywood, the judge’s examination of him commenced after he had stated that he did not recall the content of a conversation with the defendant, and that he had lied in describing that conversation in the District Court. The judge then asked Haywood if he understood “what you are saying,” following which Haywood modified his testimony. When Haywood testified that the defendant had referred in his conversation to having stabbed San Filippo and not Goodwin, he was again questioned by the judge who suggested an inconsistency with the witness’s earlier testimony.
We note that with respect to the judge’s questioning of Brady no exception was taken. “[A] bill of exceptions . . . which . . . [does] not disclose the saving of any exception in the court below . . . [brings] no question of law to this court.”
Commonwealth
v.
Underwood,
4. At argument of this case before us, and without objection by the Commonwealth, defence counsel submitted a transcript of the trial. This is no part of the record when a case reaches this court on exceptions pursuant to G. L. c. 278, § 31, as amended. The excepting party has the burden to see to it that there is adequate description in his bill of the matters by which he alleges that he is aggrieved and which are to be argued.
Commonwealth
v.
Rivers,
Exceptions overruled.
Notes
The defendant cites
Webb
v.
Texas,
Following the trial and sentencing, the defendant moved that the case be taken subject to G. L. c. 278, §§ 33A-33G. The motion was denied, and although exceptions were saved the defendant does not argue that the denial was error. Allowing exceptions under the statute in cases other than homicide is a matter within the sound discretion of the trial judge.
Commonwealth
v.
King,
