David Josiah Brewer,
Lewis v. United States (146 U.S. 370…
“ It is the duty of counsel seasonably to call the attention of the court to any error in impaneling the jury, in admitting testimony, or in any other proceeding during the trial, by which his rights are prejudiced, and, in case of an adverse ruling, to note an exception.' Of course, then, if the matters are not vital to the trial, and may be waived by failure to object, as thus decided, clearly the defendant can take advantage of nothing to which he does not except. ”
