PREFACE TO THE FIRST EDITION. 



AN earnest desire to assist in diffusing a love for microscopical 

 enquiry, not less for the pleasure it affords to the student, than from 

 a conviction of its real utility and increasing practical value in pro- 

 moting advancement in various branches of art, science, and manu- 

 facture, a wish to simplify, as far as possible, the processes for 

 preparing microscopical specimens, and the methods for demon- 

 strating the anatomy of different textures, and the belief that many 

 who possess microscopes are deterred from attempting any branch 

 of original investigation solely by the great difficulty they experience 

 in surmounting elementary detail and mere mechanical operations, 

 are my chief reasons for publishing this elementary course of lectures, 

 which was delivered during the past winter. 



It has been thought desirable to append the tables which I have 

 been accustomed to use in my course of practical demonstrations, for 

 the purpose of enabling everyone to practise for himself the most 

 useful branches of manipulation. Each table will occupy the student 

 about two hours. 



Subjoined is a list of the apparatus required for microscopical 

 research, much of which is simple and inexpensive. A number has 

 been added to each instrument, by transmitting which to any instru- 

 ment maker, the observer will be furnished with the apparatus 

 required. 



L. S. B. 



PATHOLOGICAL LABORATORY, 

 27, Carey Street, Lincoln' s-inn, June, 1857. 



