noon
`` I 'll ask Mr Brazier , and hear what he says , '' said Rob . But the naturalist thought they had done enough for one trip . The guide was right , for as evening drew near a peculiar dull , heavy roar came to them on the wind , and this increased till it was felt to be prudent to moor the boat for the night . The next morning the roar which had been in their ears all night increased , and long before noon they had glided imperceptibly into the great river , which here rushed along so impetuously that much care was necessary in the navigation of their overladen craft . But the weather was calm , and the guide 's knowledge of the management of a boat as near perfection as could be , so that in due course , after three or four more halts , they rowed one day close up among the shipping lying off the city from which they had started , and here , while waiting for an opportunity to take passage , with the great packages of plants they had prepared , they found time to make short expeditions up the river , one of which was to the mouth of the swift stream which swept off west through the great veil of trees , and from which they had struck out north and made quite a circuit through an unknown land . A month later Brazier and Rob were once more on board Captain Ossolo 's great orange schooner , which , deeply laden as it was , found room for the specimens collected amidst so much peril and care . The hours and days flew swiftly now amid rest and ease , use making them pay little heed to the constant ether-like odour of the orange cargo .