kesume and field notes. 
133 
grand ; decomposition tres active, et formant 
des trous de toutes formes. Pas de fossiles. 
Je trouve plusieurs caillonx roules de scorie vol- 
canique de la grosseur du poing et de la tete. 
Tout le reste du cliemin jusqu’au Camp Ho. 
36, est du sable blanc et grisatre et quelque 
cailloux d’alluvion. 
7 Septembre. —Sables blanc grisatre comme 
sol, et alluvion avec quelque petits cailloux de 
quartz. Gres blanc comme a Antelope bills 
dans les ravins. Natural mounds a notre 
gauche, et sables blancs, sur une surface assez 
etendue du cote oppose tie la Canadian 181- 
miles. 
8 Septembre.—Du No. 37 au No. 38.—On 
a a droit et a gauclie le gres blanc et les allu¬ 
vions du Rocky mountains. Diluvium de la 
grosseur d’une noisette a celle du poing avec 
quelque cailloux de la grosseur de la tete, de 
gres blanc et calcaire blanc environnant. Nous 
avons suivi la riviere, mais a notre Camp 38, a 
droite et a gauche de la Canadian on a le 
commencement du Llano, espece de plateau 
avec quelques montagnes plates isolees comme 
avant garde. De meme que l’Albe du Wir- 
temburg pres de Hendinger et Balenguen. 
9 Septembre.—Du No. 38 au No. 39.—On 
voit le long des bords du bassin de la riviere, 
le gres blanc, plus on moins dur blanc ou 
jaunatre, horizontal. Diluvium nombreux. 
Les cailloux de la grosseur d’une gourde de- 
viennent plus mombreux. Scories volcaniques 
erratiques. Du Camp No. 9 vis-a-vis de la 
riviere on voit un second gradin de Llano. 
10 Septembre.—Du No. 39 au No. 40.— 
Meme chose que hier - [?] ; a moitie 
cliemin, il y a un bluff du 30 pieds au-dessus 
du bassin de la riviere qui est du gres rouge 
du Trias. Le Llano que nous avons a notre 
droite se recule de la riviere pour aller a 7 ou 
8 miles plus au nord ; mais on l’apercoit 
toujours dans le lointain. Pres de Camp No. 
40 on a dans le diluvium des couches de sable 
passant a un gres tres-friable, renfermant les 
cailloux de diluvium des Rocky mountains. 
tic. The strata are horizontal, and are decom¬ 
posing rapidly, forming holes or cavities of all 
shapes ; no fossils were found. I found sev¬ 
eral rolled masses of volcanic scoriae of the 
size of the fist and of the head. The remainder 
of the road to Camp 36 is of white and greyish 
sand, with some alluvial pebbles. 
September 7.— From Camp No. 36 to Camp 
No. 37, (18f miles.) —Greyish-white sand, 
like soil and alluvium, containing some small 
quartz pebbles. White sandstone in the ra¬ 
vines, as at the Antelope Hills. Natural 
mounds at our left, and white sand, upon a 
somewhat extended surface, on the side oppo¬ 
site the Canadian river. 
September 8.— From Camp No. 37 to Camp 
No. 38.—We have white sandstone on the 
right and left, and the alluvium of the Rocky 
mountains. Diluvium from the size of a hazel¬ 
nut to that of the fist, with some masses as 
large as the head, composed of white sandstone 
and limestone, is found about us. We have 
followed the river ; but at our Camp 38, on the 
right and left of the Canadian, we have the 
commencement of the Llano, a sort of plateau, 
with some flat, isolated mountains, as an ad¬ 
vanced guard, similar to the 11 Alb” of Wir- 
temburg, near Hedinger and Balenguen. 
September 9.— From Camp No. 38 to Gamp 
No. 39.—We see along the borders of the river 
white sandstone, more or less hard, white or 
yellowish, and horizontal. Diluvium abund¬ 
ant ; the pebbles, as large as a gourd, become 
more numerous, and volcanic scoriae is also 
present. From Camp No. 39, opposite the 
river, we saw a second step or flat summit of 
the Llano. 
September 10. —From Camp No. 39 to Camp 
No. 40.—We find the rocks the same as yester¬ 
day, except-[?]; at about half-way, there 
is a bluff thirty feet high above the bed of the 
river, which is of grey sandstone of Triassic 
age. The Llano, which we have on our right, 
withdraws from the river and rises seven or 
eight miles further north, but it is always 
visible in the distance. Near Camp No. 40, 
we find in the diluvium beds of sand passing 
into a very friable sandstone, and containing 
the pebbles of the diluvium of the Rocky 
mountains. 
