Cerro Tucumcari. — Marcou. 107 
Tueumcari hill, north of the road, and the Tucumcari creek 
between. Lieut. Parke compiled that part of his map from 
Simpson's map. 
1853-57.— The 21st September, 1853, Lieut. A. W. Whipple's 
exploring party for a Railway route near the thirty-fifth 
parallel, from the Mississippi river to the Pacific Ocean, 
reached and encamped on the same spot where Simpson and 
Marey had camped four years previous^. We had in our 
hands several copies of Simpson's map and both the reports 
of Marcy and Simpson, and we had no difficult}^ in recognizing 
the Little and Great Tucumcaris. During our short stay of 
only two days, the 21st and 22d of September, Lieut. Whipple, 
assisted by the topographer A. H. Campbell, the surveyor 
John P. Sherburne, and m} T self, made a rapid survey, adding 
considerably to the topography of the area, as it will be easy 
to see, in comparing our map, published first in the atlas ac- 
companying the octavo edition of Report of the Secretary of 
War on the several Pacific Railroad Explorations, Washington, 
1855, House Doc. 129; and second in vol. xi, Reports of Explo- 
rations a ml Surveys, etc., 1861, quarto edition, with the Map of 
Lieut. Simpson. My part in the survey, was to make a geolog- 
ical sketch map, which I did, and published in my Geology of 
North America, 4to, Zurich, Switzerland, 1857. 
All of us followed carefully Simpson's map, who has the 
priority, and ought to have the credit. My part in the topog- 
raphy of the area, was to name one very prominent hill, 
Pyramid Mount and also Monte Revuelto, the corner moun- 
tain of the Llano Estaeado. 
Conclusion. — The first three original maps of the Tucum- 
cari area, are: first the map of Simpson of 1850, then the 
map of Whipple (two editions, 1855-60), and my Geological 
Map of 1857. These maps have the priority in regard to 
names and localities, and if priority exists in geography, as 
in all other sciences, then the map of Mr. Cummins, entitled: 
Geological Map of the staked plains ami adjacent urea, pub- 
lished in the Third Animal Report of the Geological 8urvey of 
Texas, Austin, 1892, is wrong and cannot be used for the 
geographical names and topographical positions of the 
Tucumcari area, as I have said previously in my paper pub- 
lished in The American Geologist of December. 1892. 
