Page 6 - ANIMAL MICROLOGY PRACTICAL EXERCISES IN ZOOLOGICAL MICRO-TECHNIQUE FOURTH REVISED EDITION BY MICHAEL F. GUYER

PREFACE TO THE FOURTH EDITION
If the author may judge from the continued use of this book in
many laboratories for some thirty years, together with comments he
has had on it from time to time, it has become a sort of stand-by for
beginners in animal microscopy, for many physicians who wish to do
microscopic investigation, and for teachers who are their own tech-
nicians. He feels obligated, therefore, to pass on to such users any
knowledge of outstanding advances in technique that comes his way
which may save their time materially or make for greater precision.
Because of its time-saving advantages and also its value with tissues
which become unduly hard, brittle, or friable under ordinary treat-
ment, introduction of the dioxan method (chap. vii) would alone
warrant a new edition. Minor changes, mainly additions, have been
made on many pages, however; and such new special techniques as
have proved to be exceptionally valuable in the author's own labora-
tory or in those of his immediate associates have been included.
Grateful acknowledgement is made to Harland W, Mossman,
Pearl E. Claus, Nellie M. Bilstad, Ernst J. Dornfeld, Melvin Doner,
James O. Foley, and Merlin L. Hayes for helpful suggestions.
M. F. G.

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