PREFACE
This is the second of a series of volumes. The intention with which this series was started was to include techniques which had been suffi
ciently studied to eliminate most of the uncertain points which usually beset a new method in cytochemistry. The first volume was most kindly received, and it is my earnest hope that this second volume will meet with equal approval. There must however be deficiencies in any en
deavour, and I hope that readers and users of this, as of the previous volume, will inform both editor and authors of these deficiencies.
Dr. Alex NovikofT has agreed to join me in editing the third volume.
We shall include in this an additional set of methods, and also supple
ments to the methods published in the first two volumes, where the authors consider it is necessary to revise their articles.
J . F . DANIELLI
May, 1961 London, England
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