5. The preferable course for the prosecution is to lay one charge which includes the circumstances of aggravation; the jury can then be directed that it would be open to them (in appropriate circumstances) to find the accused guilty of the charge without those circumstances of aggravation: see Archbold's Criminal Evidence and Practice, 42nd ed. (1985), at pars.4.459-4.461. Where the accused is alleged to have been convicted of a previous offence in respect of narcotic goods, in New South Wales the practice governed by ss.394 and 414 of the Crimes Act 1900 (N.S.W.), as amended, should be adopted. In those States where the matter is not governed by express statutory provision, the practice which is set out in Kingswell v. The Queen, at pp 22-23; p 173 of ALR, should be followed. In other words, the accused should, in the first instance, be arraigned upon so much only of the indictment as charges the subsequent offence together with any circumstances of aggravation other than the alleged previous conviction. If he pleads not guilty or the court orders a plea of not guilty to be entered, the jury should be charged in the first instance to inquire only regarding those matters. If the accused is convicted the jury will, if the accused does not admit the previous conviction, be asked to find if he was previously convicted of the earlier offence alleged: but, in relation to Victoria, see Crimes Act 1958 (Vict.), as amended, s.395. In the event of an accused pleading guilty to the offence as charged but then disputing an alleged previous conviction, since no jury will have been empanelled the judge will proceed to determine that issue. Furthermore, if an accused person pleads guilty only to the offence as defined by s.233B, any matters of aggravation that may be in dispute will fall to be determined in accordance with the practice prevailing in the State concerned.