PREFACE 



It is difficult to present a book on Recent Advances in 

 Microscopy as a coherent whole, and if it were done it would, 

 undoubtedly, have an air of being forced. In this book each 

 writer has been given a free hand in the presentation of his subject ; 

 as a result, the articles show considerable variation of style, 

 depending to a great extent on the view taken by the writer as 

 to the amount of knowledge likely to be possessed by the reader. 

 In so small a book it is, of course, impossible to present a complete 

 picture of the present state of microscopical science, but enough 

 has been written to make it clear that progress is rapid in this 

 essential branch of biological investigation ; and there is no 

 doubt that the results being obtained are of a kind likely to be of 

 permanent and increasing value. ' 



It has been difficult to determine how much to discuss, but so 

 far as possible none of the material found in other volumes of 

 this series has been included ; thus, other information will be 

 obtained from Recent Advances in Anatomy, in Physiology and 

 in Hsematology ; these books can, therefore, be used to supplement 



the present volume. 



A. PINEY 



London 



