‘The question, whether a person out of the jurisdiction is a proper party to an action against a person who has been served within the jurisdiction, must depend on this, supposing both parties had been within the jurisdiction would they have been proper parties to the action? If they would, and only one of them is in this country, then the rule says that the other may be served, just as if he had been within the jurisdiction.’
‘Where the liability of several persons depends upon one investigation, I think they are all “proper parties” to the same action and, if one of them is a foreigner residing out of the jurisdiction, rule 1(g) of Order XI applies.’
‘(a) if separate actions were brought º against each of them º some common questions of law or fact would arise in all of the actions and (b) all rights to relief claimed in the action (whether they are joint, several or alternative) are in respect of or arise out of the same transaction or series of transactions.’