All attempts to curry favor with juries by fawning, flattery or pretended solicitude for their personal comfort are unprofessional. Suggestions of counsel, looking to the comfort or convenience of jurors, and propositions to dispense with argument, should be made to the court out of the jury's hearing. A lawyer must never converse privately with jurors about the case; and both before and during the trial he should avoid communicating with them, even as to matters foreign to the cause.