Te ee Se ee 
In the sandy arroyos where our fires burn, that look asif they 
had been formed but a year or two since, was broken pottery, and 
the remains of a large building, similar in form, substance, and ap- 
parent antiquity to those so often described. Strolling over the 
hills alone, in pursuit of seed and geological ‘specimens, my thoughts 
went back to the States, and when I turned from my momentary 
aberrations, I was struck most forcibly with the fact that not one 
object in the whole view, animal, vegetable, or mineral, had any 
thing in common with the products of any State in the Union, with ° 
the-single exception of the cotton wood, which is found in the wes- 
tern States, and seems to grow wherever water flows from the ver- | 
. tebral range of mountains of North America; this tree we found 
growing near the summit of the Pifion Lano range of mountains, in- 
deed, always where a ravine had its origin. ; 
In one view could be seen clustered, the larrea Mexicana, the ~ 
cactus, (hing) cactus, (@handelier) green ‘wood acacia, chamiza, 
‘ prosopis odorata, and a new variety of sedge, and then large open _ 
spaces of bare gravel. Ye 
The only animals seen were lizzards, scorpions, and tarantulas. 
I made elaborate observations for time and latitude, and for longi- 
‘tude by measurement of lunar distances. Anxious to observe eclip- 
ses of Jupiter’s satellites, I determined once more to.try the small 
telescope with which the satellites of Jupiter could just be discerned. 
I strained my eyes for two nights in succession to see HW I. could 
discover the moment*of immersion and emersion of I and III satel- 
lites of Jupiter, which were visible from our camp. My efforts 
were fruitless, arid the result to myself is a distressing nervous af- 
. fection of the eye, which may injure the correctness of my other 
observations of this night. ; 
.. The resulting latitude of the place is 32° 57’ 43”. 
ongitude ‘* — Th. 23m. 19s. 
Rate of chronometer 2075, losing 12” 7s. per day. 
The height by barometer 2115 feet above the sea, ; 
The latitude was deduced from 13 circum-meridian altitudes of be- 
ta aquarii, and 12 altitudes of polaris, The longitude from 8 dis- 
tances between alpha arietisand the D, 9 of regulus and the D, and. 
5 of aldebaran and the D. <i oe 
pember 7.~About two miles from our camp the San Pedro 
joins the Gila just as the latter leaps from the mouth of the cajion. 
The place of meeting is a bottom three miles wide, seeming a con= 
tinuation of that of the Gila. 
and before it closed, had again cont 
little more than sufficient for the ri 
