Report presenting a study of stoping methods and costs and summarizing the data obtained in earlier publications and those obtained during investigations in the field that apply particularly to stoping.

"The European corn borer is recognized as a dangerous enemy of the corn crop.... Its eradication is considered economically impossible but it is believed that the injury may be kept at a point so low that little commercial damage will occur during normal seasons. This can be done by using control measures and practices that have proved to be effective.... On some farms some changes in the crops grown and in their sequence will aid materially in controlling the borer and may prove profitable even when borers are not present. The control program for the individual farm should be given consideration at once in order to avoid sudden disturbance of the organization and operation of the farm when control measures do become inevitable. The necessity of concerted effort by all producers in an infested district becomes evident when the life habits of the borer are considered." -- p. ii

Report discussing earthquake activity in the United States during 1935. The report is broken down by regions and has sections for specific earthquakes.

Introduction Object and Scope of Paper: "This paper attempts to assemble and discuss briefly in one volume a number of subjects relating to the mining of gold, particularly from lode deposits, in the United States and Canada."

From introduction: "In this paper are assembled and summarized many subjects relating to the copper industry in North America. Production of mines and districts, history of the industry in North America. Production of mines and districts, history of the industry, geology, of the principal deposits, and mining methods and costs are discussed."

From Introduction: "This report covers the essential features of the asbestos industry, including occurrence, production, mining, milling, utilization, international trade, and marketing."

Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies, and listings for Spanish edition publications from the Porto Rico Station. Name and subject indexes start on page 901.

A topical, alphabetically arranged index to volumes 61-70 including experiment station records, publications reviewed, and foreign publications. In has a list of all editorial notes from the referenced volumes.

A topical, alphabetically arranged index to volumes 41-50 including experiment station records, publications reviewed, and foreign publications. In has a list of all editorial notes from the referenced volumes.