The object of this series of studies is to investigate the value of various antiseptics and their usefulness as milk preservatives; especially relating to the preservation of composite samples as used in creameries. Closely allied with this subject are the study and investigation of those substances which are on the market and are sold for the purpose of preserving milk, butter and other foods; these substances being sold under the name of a certain brand and their composition kept secret from the purchaser. It is also our intention, if time will allow the work to be carried on, to undertake the examination of the action of these substances used as food preservatives as related to digestion. This study will be the first of a series in which it is hoped results will be presented which will be of value to those interested in dairy lines.



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