Now that two numbers of the Bulletin have been issued by the Survey, a word of explanation as to the object of its publication seems to be necessary. The vast amount of new material in all departments of natural history collected in the West under the auspices of the Survey, and in some instance demanding prompt publication, suggested the present form, in order that this new matter might not be too much scattered, either in the proceedings of societies, or in independent papers not easily accessible to the scientific student. The annual report will not appear until late in the summer, (July or August,) and, in consequence, the Bulletin will be issued from time to time as the necessity arises for the prompt publication of valuable matter.

Report↗

USGS1872

Supplement to the Fifth Annual Report of the United States Geological Survey of the Territories for 1871

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Annual Report↗