viii PREFACE. 



microscopic manipulation ; and as it is intended 

 to assist the beginner as well as the advanced 

 student, the very rudiments of the art have not 

 been omitted. 



As there is a diversity of opinion as to the best 

 mode of proceeding in certain cases, numerous 

 quotations have been made. Wherever this has 

 been done, the Author believes that he has acknow- 

 ledged the source from which he has taken the 

 information ; and he here tenders his sincere 

 thanks to those friends who have so freely allowed 

 him to make use of their works. Should, however, 

 any one find his own process in these pages 

 unacknowledged, the Author can only plead over- 

 sight, and his regret that such should have beer* 

 the case. 



WAKRINGTON 



