Report of the Committee on the Descriptive Chart for 1919

Abstract

PART I. METHODS OF PURE CULTURE STUDY. REVISED The 1917 report of this committee contained a description of the methods recommended to be used with the Descriptive Chart. Copies of the report have been on sale by the Society and the first pdition is now practically exhausted. Opportunity is therefore Jtaken to revise the report, printing it in the JOURNAL OF BAC-TEIOLOGY to cal it to the attention of the members of the Society, the reprints to be placed on sale as before. As soon as these reprints are available, one copy will be furnished with every order for Descriptive Charts, and additional copies may be obtained for 15 cents apiece postpaid, or if five or more copies are ordered, for 10 cents each, transportation not postpaid. Orders for these reports, as well as for the Descriptive Charts, are to be sent to the chairman of the committee (address Geneva, N. Y.). Methods are given in this report for all the determinations listed on the 1917 chart (recommended for instruction) but methods have not yet been prepared for all the determinations called for by the older chart. As the chart designed for instruction is now in most general use, it has seemed wisest to give further attention to these few methods rather than to do work on some of the other, less frequently used, determinations. The methods given here are not to be considered official. They are merely the best that have come to the attention of the committee at the present time. Criticisms and suggestions are at all times welcome, in order that future editions of this report may be brought up-to-date.