When and how they were eventually sent I cannot tell with positive certainty. There is a difference of opinion on this point between Mrs. van Warmelo and her daughter, and there is no way of settling the dispute, because Hansie's diary contains no word about the White Envelope, for reasons which it will hardly be necessary to explain. Mrs. van Warmelo says the instructions were dispatched in a false double-bottom of an ordinary safety match-box. Hansie thinks they were either hidden behind a photo-frame or in a tin of insect-powder, both these methods having been employed on various occasions, but at present we are only concerned with the fact that the instructions reached their destination safely, and from that day until the end of the war a gloriously free and uninterrupted communication was kept up between Harmony and Alphen and one spot in the north of Holland, of which we shall hear more as our story unfolds itself. Further experimenting showed that the lemon-juice became visible after a few days when written on certain papers, while on others there was nothing to be seen after many weeks, and this danger was immediately communicated to Holland as a very serious one, for it stands to reason that the danger connected with the sending of the White Envelope _from_ South Africa was nothing compared to the danger of receiving one and having it censored three weeks after it had been written. One had to keep in mind that letters leaving the country would be censored immediately and would not be subjected to further scrutiny in Europe, whereas letters for South Africa ran every risk of being betrayed on examination, after a three-weeks' journey by land and sea. When the smuggled instructions were well on their way, the first White Envelope was written to Holland, and carelessly thrust amongst a pile of other letters by the quaking Hansie when next she handed her mail to "Miserable Renegade." He glanced through them all without examining them, merely putting the mark of the censor on them and assuring Hansie that they would be forwarded that very day. No seven weeks could have been longer or more full of suspense than those which followed, and the excitement at Harmony when in due time a square white envelope in the well-known hand arrived from Holland can better be imagined than described. With what anxiety it was opened and how eagerly examined before the hot iron was applied! how keen the delight when nothing legible was found, even on the closest inspection! What relief, at last, when the written messages became not only legible, but clear and distinct! So this method was going to answer beyond their wildest expectations! To make assurance doubly sure, and because Hansie did not trust "Miserable Renegade" one jot, she sometimes made use of friends, going to Johannesburg, to post her White Envelope there, giving as her reason for doing so the difficulties she had had with the Pretoria censor.