REFERENCES TO THE LITERATURE OF THE MICROSCOPE 



1. Abbe, E. 1871. Uber die Bestimmung der Lichtstarke optischer 



Instmmente . . . Ges. Abh., 1 : 14-44. 



2. . 1873. Beitrage zur Theorie des Mikroskops und der 



mikrosknpischen Wahrnehmung, Ges. Abh., 1: 45-100. (This 

 important paper expounds the diffraction theory and many other 

 points.) 



3. . 1873. Tiber einen neuen Beleuchtungsapparat am Mikro- 



skop, Ges. Abh., 1: 101-112. (On the two-lens uncorrected con- 

 denser, and dark-field illumination.) 



4. . 1878. Die optischen Hiilfsmittel der Mikroskopie, Ges. 



Abh., 1 : 119-164. (Shows the need for new optical glasses in order 

 to improve objectives.) 



5. — ■. 1878. liber mikrometrische Messung mittelst optischer 



Bilder, Ges. Abh., 1 : 165-172. (Gives optical conditions for special 

 measuring microscopes.) 



6. — ■. 1879. tlber Stephenson's System der homogenen Immer- 



sion bei Mikroskop-Objecktiven, Ges. Abh., 1: 181-195. 



7. . 1879. On new methods for improving spherical correction, 



applied to the construction of wide-angled object glasses, Jour. 

 Roy. Micr. Soc, 812-824. (Method of correcting the new oil- 

 immersion objectives.) 



8. — — ■ — . 1879. ilber die Bedingungen des Aplanatismus der 



Linsensysteme, Ges. Abh., 1: 213-226. (Restricted meaning of 

 aplanatic.) 



9. — ■. 1880. Some remarks on the apertometer, Jour. Roy. 



Micr. Soc, 20-31. 



10. — — — : 1880. Beschreibung eines neuen stereoskopischen Oculars 



nebst allgemeinen Bemerkungen uber die Bedingungen mikro- 

 stereoskopischer Beobachtung, Ges. Abh., 1 : 244-272. (Theory of 

 stereoscopic vision with the microscope, and account of new binoc- 

 ular attachment.) 



11. . 1880. tJber die Grenzen der geometrischen Optik, Ges. 



Abh., 1 : 273-312. (Defense of the diffraction theory. Instructive 

 reading.) 



12. . 1881. On the conditions of orthoscopic and pseudoscopic 



effect in the binocular microscope, Jour. Roy. Micr. Soc, 203-211. 



13. . 1881. On the estimation of aperture in the microscope. 



Jour. Roy. Micr. Soc, 388-423. 



14. : 1882. The relation of aperture and power in the micro- 

 scope, Jour. Roy. Micr. Soc, 300-309. 



292 



