(4) Transit payments, that is, rates of payment by one administration to another administration in respect of the transmission of closed mails over the territory of the second administration by means which it provided, were fixed at 2 fr. per kilogramme for mails containing letters and postcards, and 25 centimes per kilogramme for mails containing other articles. The rates were increased to 4 fr. and to 50 centimes, respectively, when the distance of transmission exceeded 750 kilometres on the territory of one administration. In the case of sea transits exceeding 300 nautical miles, the despatching country was required to pay to the administration which provided the service, the expenses of the transportation, not exceeding 6 fr. 50 per kilogramme for letters and 50 centimes per kilogramme for other articles. In November 1875 the Indian Post Office administration applied for admission to the Union. A further Conference at Berne was thereupon called to consider this request. Representatives of a large majority of the signatories of the Treaty of 1874 attended the Conference, and other questions were raised. France, Spain, and Holland asked for the admission of their respective colonies; Brazil submitted a declaration of adhesion; and Great Britain intimated that Canada and Newfoundland would submit applications. The original Union had been limited to the European countries, Turkey (including Turkey-in-Asia), Russia-in-Asia, Northern Africa, Egypt, and the United States of America; and these further developments widened the problem before the Congress. Instead of merely considering the question of admitting India, it was called upon to face the possible extension of the Union to the remotest parts of the globe. The question of transit rates, particularly of transit rates by sea, became therefore one of very great importance and difficulty, since it was necessary to fix such rates as would permit of the maintenance of that uniformity and lowness of the rates of postage which were the fundamental bases of the Union. On this point there were prolonged and difficult discussions. The French delegates submitted a proposal for the application of the treaty of Berne to all quarters of the globe, with a uniform transit rate of 6 fr. 50 per kilogramme for letters and 50 centimes for printed matter, etc.[587] The countries which maintained the more important and costly maritime services were not, however, prepared to submit to the loss of revenue which the adoption of the proposed transit rates would entail.[588]