nd through official channels. Hayden considered it his
duty to give the public every possible opportunity to see what he
was doing and to judge his work. His efforts were chronicled at
length in the public prints. His summers were spent in the field,
and his winters were devoted to working up results and making every
effort to secure influence. An attractive personality and extreme
readiness to show every visitor all that there was to be seen in his
collections, facilitated his success. One day a friend introduced
a number of children with an expression of doubt as to the little
visitors being welcome. "Oh, I always like to have the children
come here," he replied, "they influence their parents." He was so
successful in his efforts that his organization grew apace, and soon
developed into the Geological Survey of the Territories.

Ostensibly the objects of the two organizations were different.
One had military requirements mainly in view, especially the mapping
of routes. Hayden's survey was mainly in the interests of geology.
Practically, however, the two covered the same field in all points.
The military survey extended its scope by including everything
necessary for a complete geographical and geological atlas.
The geological survey was necessarily a complete topographical and
geological survey from the beginning. Between 1870 and 1877, both
were engaged in making an atlas of Colorado, on the maps of which
were given the same topographical features and the same lines of
communication. Parties of the two surveys mounted their theodolites
on the same mountains, and triangulated the same regions. The Hayden
survey published a complete atlas of Colorado, probably more finely
gotten up than any atlas of a State in the Union, while the Wheeler
survey was vigorously engaged in issuing maps of the same territory.
No effort to prevent this duplication of work by making an arrangement
between the two organizations led to any result. Neither had any
official knowledge of the work of the other. Unofficially, the one
was dissatisfied with the political methods of the other, and claimed
that the maps which it produced were not fit for military purposes.
Hayden retorted with unofficial reflections on the geological
expertness of the engineers, and maintained that their work was
not of the best. He got up by far the best maps; Wheeler, in the
interests of economy, was willing to sacrifice artistic appearance
to econom