IO THE A B C OF PHOTO - MICROGRAPHY 



is such a unanimity of opinion on the subject 

 among teachers generally, that the microscope 

 and outfit furnished the students are prac- 

 tically the same in design, quality and cost, 

 though supplied by many different makers in 

 America and Europe. 



The "Continental" form of stand almost 

 universally in use had its birth in Germany, 

 but so eminently is it adapted to the daily 

 work of the student that it has practically 

 superseded all others everywhere. The usual 

 outfit consists of stand with two objectives, f" 

 and i"; two eyepieces or oculars of the Huy- 

 ghenian form, and an Abbe chromatic substage 

 condenser. To these an excellent iV oil im- 

 mersion objective is added for bacteriological 

 and high power work, at a marvelously low 

 price for such a lens. The instruments by 

 Zeiss and Leitz, of Germany, and the Bausch 

 & Lomb Company in the United States are 

 too well known to need more than mentioning 

 here. All of these eminent makers furnish 

 outfits as above, practically the same in design, 

 workmanship, optical qualities and cost. Each 

 has some special feature of its own, as well as 

 special admirers, but it may be safely said that 

 one cannot go amiss in selecting either of these 

 makes for photo-micrographic work. Not so 



