APPENDIX A.
OFFICIAL INSTRUCTIONS GOVERNING THE EXPEDITION.
In order to make the records of the St. Elias expedition complete, copies of the instructions under which the work was carried out are appended:
DEPARTMENT OF THE INTERIOR,
UNITED STATES GEOLOGICAL SURVEY, GEOLOGIC BRANCH,
Washington, D. C., May 28, 1890.
Mr. I. C. RUSSELL, Geologist.
SIR: You are hereby detailed to visit the St. Elias range of Alaska for work of exploration, under the joint auspices of the National Geographic Society and the United States Geological Survey. The Geological Survey furnishes instruments and contributes the sum of $1,000 towards the expenses of the expedition. The money devoted to this purpose is taken from the appropriation for the fiscal year ending June 30, 1890, and the manner of its expenditure must conform to that fact.
The Survey expects that you will give special attention to glaciers, to their distribution, to the associated topographic types, to indications of the former extent of glaciation, and to types of subaërial sculpture under special conditions of erosion, and that you will also bring back information with reference to the age of the formations seen and the type of structure of the range.
With the aid of Mr. Kerr, it is expected that you will secure definite geographic information as to the belt of country traversed by you.
Very respectfully, G. K. GILBERT,
Chief Geologist.