*<*\£Ai 



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THE AMERICA 



MONTHLY 



MICROSCOPICAL JOURNAL. 



Entered at the post-office as second-class matter. 

 VOL. XXI. JANUARY, 1900. NO. 1, 



CONTENTS. 



Multiple Color Illumination. With Frontispiece 1-12 



Preserving as Permanent Specimens Casts Found in Urine 12-14 



Agar- Agar 14-19 



Photo Micrography with Opaque Objects 19-21 



Having met with disappointment in getting the frontis- 

 piece we think best to send out this number without further 

 delay and enclose it in our next number. Publisher , , - . J 



Society ; Quekett Utt¥_[ - \^^. ...^^.. ^.T^^ ^ 



New Publications. — Moulds, Mildews and Mushrooms; Botany 30-31 

 Microscopical, Notes. — Card; Slides; Objects ; To Print a Palm 32 



Multiple Color Illumination. 



JULIUS RHEINBERG. 



With Frontispiece. 



It is the natural desire of all who possess a microscope 

 to look at their objects to the best advantage. For those 

 who employ the microscope in the pursuit of science, it is 

 a necessity, and for those who use it as a pastime it is 

 equally pleasurable to know that they are seeing as much 

 as can be seen, given their peculiar object and their par- 

 ticular lenses. 



Now what is the secret of doing this? It lies simply 

 • in the mode of illumination, and I purpose, in this arti- 

 cle to treat of some comparatively new methods or illu- 



