PREFACE. 



THIS handbook is not intended as a treatise on the micro- 

 scope, nor to give particulars of the various patterns of 

 instruments made, details of which can be seen in the 

 makers' catalogues, but to afford such information and 

 advice as will assist the novice in choosing his microscope 

 and accessories, and direct him in his initial acquaintance 

 with the way to use it. 



The directions for preparing microscopic objects by Mr. 

 Martin J. Cole are the outcome of a very long experience 

 as a preparer of Microscopic Object^ of the highest class, 

 and cannot fail to be of the greatest service to the working 

 microscopist. 



M. I. CROSS. 



