VI 



PREFACE 



acquainted with the art of cutting and staining sections. I trust the work will 

 prove a help to the artisan and labourer students in microscopy, of which there 

 are not a few, and to such I would say, be not discouraged, the author of this 

 work issued from your ranks. 



To Prof F. E. Weiss, D.Sc, F.L.S., my thanks are due for his assistance 

 and suggestions relating to the structural parts of the photomicrographs. 



ABRAHAM FLATTERS. 



20, Church Road, Longsight, 

 September, 1905. 



