l8 ELEMENTARY PHOTO-MICROGRAPHY. 



Thus pleasure and knowledge will go together, 

 and every step will prove an incentive to further 

 progress. 



On the other hand, if the worker takes up the 

 matter as one merely for amusement, he is not 

 likely to master the difficulties that will present 

 themselves sooner or later, failing which he is the 

 more likely to get tired and discouraged. 



The business man as well as the professional man 

 will find endless ways of turning the microscope to 

 profitable account, when once the art of illumi- 

 nation and knowledge of correct exposure are 

 overcome. 



The results of photo-micrography (pronounced 

 foto-mi-krog-ra-fi) are indisputable, and are far 

 more faithful than any sketches made by the most 

 skilled artist. 



Some of the beautiful pictures drawn by means 

 of the camera-lucida, and used as illustrations of 

 microscopic objects, stand only in the same posi- 

 tion as faked photographs, for the objects them- 

 selves never appear trimmed up in such a 

 mechanical manner, hence the camera-lucida, that 

 did so well for our fathers, is now a thing of the 

 past, except where simple outlines only are wanted. 

 A few years ago, even in our large cities, there 

 were few persons capable of producing good photo- 

 micrographs, while to-day they are produced in 

 every branch of science. 



