But Doctor Kerr's find raised a point of some interest to the Government. In framing the licensing regulations, the advisers of the Crown had thought only of the possibilities of alluvial mining. Had they even directed their thoughts toward rock gold, they would probably have considered it highly improbable that any explorer should be able to extract the metal without an amount of preparation which he would hardly undertake upon the security of a bare license. But, as it happened, Doctor Kerr had not even a license when he discovered the gold, though he took one out as soon as possible afterward. To strengthen its position, the Government seized the gold in the hands of a firm of shippers who were about to send it to England; but, on the firm's representation, it was released, security being given for the payment of a royalty of 10 per cent, if the Crown should see fit to demand it. Early in August, 1851, the Governor announced that, for the future, licenses would be held to cover only alluvial gold, and that for rock gold found on Crown land the Government would demand a royalty of 10 per cent., half that amount if the working was on private land. A fortnight later the Government undertook the escort of gold from the diggings to Sydney, thereby adding considerably to the Crown revenue and at the same time obtaining additional power over the gold districts. By the end of August, gold to the value of seventy thousand pounds had been exported from the colony. But these figures were soon eclipsed by those which followed. The news of the gold discoveries near Bathurst had soon spread through the Australian colonies. The more adventurous of the colonists started at once for the diggings. Others, often encouraged by their governments, who foresaw a constant drain of population in favor of the gold colony, endeavored to find gold within their own limits. Rumors of discoveries were constantly arising. Gold was found at Echuca in South Australia, in the Fingal district of Tasmania, and in the Curumandel ranges of New Zealand. But none of these discoveries could compare for a moment with those which took place within the newly constituted colony of Victoria. Even so early as August, 1851, gold had been worked at a place called "Deep Creek" (or "Anderson's Creek"), not far from Melbourne, but this was soon abandoned in favor of the diggings at Clunes, on the headwaters of the streams which flow north from the great dividing range to the Murray River. A month later, these again were temporarily deserted in favor of the rich Buninyong district, just south of the range, whose chief centre was Ballarat. Finally, at the beginning of October, 1851, the wonderful finds at Mount Alexander, a spur of the Macedon range to the north of Melbourne, were eclipsing all previous discoveries.