PREFACE 



the work carried out both jointly and separately by Professor 

 MacConaill and myself in his department in Cork and in my 

 laboratories in London on the fuchsinic acid dyes. Only a small 

 part of this work is reproduced here. Acknowledgements are also 

 due to Mr. J. Rafferty, Senior Technician, Department of 

 Anatomy, University College, Cork for technical assistance in 

 connection with histological trials of the fuchsinic acids, their 

 component dyes and many others used in the studies carried out 

 by Professor MacConaill and myself. Mr. Rafferty showed a 

 great deal of initiative in the performance of this work. My 

 thanks are also due to Mr. J. R. Thomas for relieving me of 

 other work thereby making it possible for me to devote time to 

 the writing of this book. 



Apart from the publishers no one other than myself has seen 

 every page of this book prior to publication. Therefore no one 

 except myself can be held responsible for any errors that may 

 have crept in. 



In conclusion I wish to express my special gratitude to Sir 

 Howard Florey, F.R.S., for his great personal kindness and 

 the interest he has shown. 



Edward Gurr 

 Michrome Laboratories, 



42 Upper Richmond Road West, 

 East Sheen, 



London, S.W.14 



IX 



