_21st day._ We sent four guides on tule rafts to see whether the boats could get through. They encountered some difficulty, although they were optimistic that it was possible [to pass]. We set out at one o'clock at noon and cruised until nightfall in a direction northeast, one-quarter east. The stream bed is full of logs and the boats grounded two or three times. The stream is inadequate for travel by boat. We journeyed about three or four leagues and stopped at a high spot which had a number of oak trees but was entirely surrounded by tule swamps. A league from the starting point we passed out of the slough called Pescadero. We left it on the right hand and took the [channel] on the left hand, which trends to the northeast and [with] the opening which we left behind forms an island. For an Indian went past with a boat and turned off and met us in the big river [Braso Grande], he going upward and we downward. Although some of the soldiers said that it [the channel] emptied into White Lake [Laguna del Blanco][39] I conclude that this is not true, but that White Lake discharges into the Río Grande. Furthermore, from horseback, in the tules, one cannot see well, so I base my opinion on what an Indian said. The matter could not be settled because the boats ran aground.[40] _22nd day._ We set out from the place of the oak trees at about seven o'clock in the evening. We went to the southeast with some turns to the east. We traveled four or five leagues, two of them still in low water. The river bank was populated with oaks and other trees, and once the boats ran aground. At the end of the two leagues the water increases threefold in volume and the river divides into two channels. One of these is that which we left behind in the evening of the 18th. [The other] is better because it carries much more water. [Both branches] go to unite with each other in the middle of the tule swamps, where we slept on the day mentioned.[41] We kept on cruising up the river with the tripled volume of water. The water is clear and both banks are covered with oak trees. At three leagues we encountered the Río Grande. Here we observed the junction of the rivers; it has about 5 varas depth in the center and a width of about 100. The river water is pure, because it was low tide and it is known that the tide exercises little influence because the land is already high. This place lies about on the parallel of the Pueblo [San José], according to those who have come by land, and is distant from the Pueblo some 25 or 26 leagues from east to west, although it may be a little below this latitude. Here it is evident from the quantity of water that several rivers have united, for there is no ford and there would always be required a pontoon or boat to cross the stream. At this place there are many oak trees on the opposite, or eastern, shore. There is no tule, and only in great floods does the river overflow, for the western bank is the lower. Here it is necessary