Excerpt from Bacteriology of Milk
This is, we believe, the first occasion on which an attempt has been made to deal in a systematic manner with the bacteriology of milk, a subject which is year by year engrossing more of the attention of the public and of the medical profession, on account of the advances which have been made in preventive medicine in general and bacteriology in particular.
We commenced the serious work involved in writing the present volume in 1899, and have thus spent, in available time at our disposal, a period of some five years. The length of this period is due in part to the ever-widening field which had to be covered, and in part to unavoidable delays. Whilst this is to be regretted, there is perhaps the advantage that no part of the work has been hastily done. Yet for obvious reasons, the chief of which is the extremely rapid growth of bacteriology, much of the work must be looked upon as provisional only. The conditions affecting bacteria in nature, the potentiality of bacteria in butter and cheese making, and the species of bacteria belonging to milk are subjects still requiring much more investigation than they have hitherto received. The practical and applied aspect of the bacteriology of milk also
claims much fuller inquiry. For instance, comparatively little is known of the relationship between disease in the cow and its transmission to man by means of milk. Questions of preventive medicine and of the control of the milk supply are also still open to revision. We are under no illusion as to finality or completeness in this volume.
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