| PLATE I |
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| Scale of urinary colors, according to Vogel. |
A MANUAL
OF
CLINICAL DIAGNOSIS
JAMES CAMPBELL TODD, Ph.B., M.D.
Illustrated
W. B. SAUNDERS COMPANY
W. B. SAUNDERS COMPANY
PHILADELPHIA
MY FATHER
JOE H. TODD, M.D.
THESE PAGES ARE
AFFECTIONATELY DEDICATED
PREFACE
This book aims to present a clear and concise statement of the moreimportant laboratory methods which have clinical value, and a briefguide to interpretation of results. It is designed for the student andpractitioner, not for the trained laboratory worker. It had its originsome years ago in a short set of notes which the author dictated tohis classes, and has gradually grown by the addition each year of suchmatter as the year's teaching suggested. The eagerness and care withwhich the students and some practitioners took these notes and usedthem convinced the writer of the need of a volume of this scope.
The methods offered are practical; and as far as possible are thosewhich require the least complicated apparatus and the leastexpenditure of time. Simplicity has been considered to be moreessential than absolute accuracy. Although in many places the readeris given the choice of several methods to the same end, the authorbelieves it better to learn one method well than to learn several onlypartially.
More can be learned from a good picture than from any description,hence especial attention has been given to the illustrations, and itis hoped that they will serve truly to illustrate. Practically allthe microscopic structures mentioned, all apparatus not in generaluse, and many of the color reactions are shown in the pictures.
Although no credit is given in the text, the recent medicalperiodicals and the various standard works have been freely consulted.Among authors whose writings have been especially he