July 2d. We are leaving the mountains and I dread the plains again, they are so monotonous. We found some wild grapes, and, to us, the most matured were not sour. Liscomb was taken ill today with dysentery, and we feared we should lose him. Tone put him on his horse, the easiest we had, and Carroll was most kind to him; we were compelled to go on, but we gave him short rests as frequently as we could.

Gradually the plain narrowed, and as we neared the ridge of mountains which bounds one side of the valley of Santa Cruz, we passed the ruins of a once beautiful Mission. It was a low, Gothic style of architecture, built of yellowish white sandstone.

We waited in the shade of the walls of Santa Cruz to rest young Liscomb, and the main company wound its way along to a rancho a few miles distant where we could get corn for the horses and mules. I did not have time to see enough of Santa Cruz to describe it. Like all the towns of this part of the country, it has the remains of strong walls, that fifty years ago gave safety from the incursions of the Indians.

As the day cooled we took Liscomb on, and crossed the Conchos River, called by the natives, of course, "Rio Grande," as they call every river in Mexico. On reaching camp I found Langdon Havens had killed three glossy ibises at one shot; they are most abundant here, also white egrets and green herons, and I was delighted to see buff-necked Cormorants of California, and many other birds strange and new, but no time have I to study them, or even to secure and prepare specimens, and how could I carry them if I had them?

I was called here to see Carroll, who while measuring corn was taken with a violent fit, after which he was so exhausted we had to leave him behind with four men, and we rode ten miles further on, and at the setting of the sun came to a little river, with high bluffs, and most beautiful in the light and shade given by the clouds.

Our path has been most precipitous, alternately descending and ascending, to and from the river. Never in any country have I seen more beautiful lands; we rode through groves of water-oak, and what I should call willow-oaks, with a sweet little acorn, almost as good as a nut, occasionally pines and cedars; and there are many little brooks, in nearly all of which are fish, so I presume there must be water holes all the year round.

Antelopes are seen from time to time, but only one or two a day, wonderfully scarce for a country apparently so well adapted for both deer and antelopes. The black-tailed hare is seen too, but scarce, compared to the numbers we saw after leaving Parras.

Leaving this place we rode along a sandy bottom, which in the rainy season is the bed of a torrent. We left just before sunrise, and the heavy dew of this country gave such a freshness to all vegetation that nature seemed more luxuriant than ever. The prairies at this season present to our view many beautiful flowers, nearly all of a most delicate character, like primroses, larkspurs, sweet williams. Nettles six feet high, their blue flowers almost hiding the rich green of their stinging leaves, extend, sometimes, for miles along the sand bars. The cactus seems to have been left behind. We now found quantities of mushrooms, looking like the same species at home, and having the same flavor both raw and cooked.

The minerals I cannot speak of, but Dr. Trask tells me that there is a good deal of silver, and some gold in the earth mixed with quantities of lead. The stone is sandstone, and now and then we see most beautiful marbles, black and white, in strata, as if laid by hand.

We killed three pigeons today, and have seen many, of what I take to be either Steller's Jay or the ultramarine, but they are so shy, we cannot get at them. One of "the boys" gave me two young marmots, but I cannot place them, though the spots are a good deal like the Mexican, but not regular enough for that species. The land snail, which as far as Monterey was abundant, has gradually disappeared, and we are now free from it. The eatables in this country are scarce, no vegetables except beans, onions, and a very small pea. Beans are seventy-five cents an "Almud." Corn one and one half to three dollars a "fanega" (nearly three bushels). Cattle, half grown, three to twelve dollars. Sheep from a dollar and a half to two dollars. Hogs, strange to say, run up to eighteen and twenty dollars, and are fattened expressly for the lard, which is as high as eight dollars for twenty-five pounds, and a very large, fat animal has sold for fifty dollars.