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Libmvw 



PREFACE. 



BOOKS on photo - micrography, although 

 numerous, are chiefly both expensive and 

 perplexing, covering as they do much extra- 

 neous ground that has little or no interest for the 

 beginner who wishes simply to learn how to take 

 photographs through a microscope. Indeed, some 

 of the works professing to deal with the subject of 

 photo-micrography are little better than trade cata- 

 logues, and devote far more space to the description 

 of various microscopes and accessories than to the 

 elementary information generally desired. Others, 

 again, specify expensive appliances beyond the reach 

 of an ordinary person, so that the reader is deterred 

 from taking up the subject at all. 



Now, instead of filling the novice with dismay at 

 the difficulties to be encountered, it is my intention 

 to make the matter so easy that he may be en- 

 couraged to proceed. 



When lecturing in different towns, I have been 

 surprised to find what an amount of interest could 

 be aroused in working men, many of whom have 

 been stimulated to commence photo-micrography, 

 and have sent me specimens of their early attempts 

 along with expressions of gratitude for directing 



