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Such wide publicity has already been given to this admirable work of Dr. Belfield throughout both the professional and non-professional press, that it is almost needless to remark it is a reprint of the Cartwright lectures, recently delivered by him in New York, before the Alumni Association of the College of Physicians and Surgeons. That he fully appreciated the compliment bestowed upon him by the invitation to deliver these lectures, is plainly evinced by the amount of care which he has taken in their preparation, for they bear the imprint of most diligent research. The value of his publication is greatly enhanced by the addition of numerous excellent cuts of the various forms of bacteria, copied for the most part from photograms by Koch.
The scope of the work may be estimated by reference to the classification which the author has made of the evidence upon which the germ theory