40,4. Neue Literatur. 4J7 



2. Biographisches. 



Heidenhain, 31., Zum 70. Geburtstage Ramön y Cajals (Deutsche med. 



Wochenschr. Jahrg. 48, 1922, S. 811 m. 1 Abb.). 

 Spatz , H. , Zum 70. Geburtstage von S. Ramön y Ca.jal (München, med. 



Wochenschr. Jahrg. 69, 1922, S. 635—637). 



3. Mikroskop und Nebenapparate. 



Ash, C. H., Success in practice (Spencer Lens Company, Buffalo 1923). 

 Adams, L. H., a. Williamson, E. D., A note on the annealing of optical 



glass (Journ, Opt, soc. of America vol. 4, 1920, S. 213—223). 

 Behr, L., Determination of focal lengths and principal phmes (Journ. Opt. 



Soc. of America a. Rev. of sc. instrum, vol. 7, Nr. 9, 1923, S. 687). 

 Biittolph, L. J. , A small high intensity mercury arc in quartz- glass 



(Journ. Opt. Soc. of America a. Rev. of sc. instrum. vol. 6, Nr. 10, 



1922, S. 10(36—1071). 

 Ferguson, W. F. C, Note on Mr. F. E. Wright's article for determining 



prism angle errors (Journ. Opt. Soc. of America a. Rev. of sc. instrum. 



vol. 6, Nr. 2, 1922, S. 108). 

 Frederick, C. W., 1919 Report of the Standards committee on lenses and 



optical instruments (Journ. Opt. Soc. of America vol. 4, 1920, S. 236 



—238). 

 Gardner, J. C. , Constructional data for a cemented objective of barium 



crown and flint (Journ. of Opt. Soc. of America a. Rev. of sc. instrum. 



vol. 6, 1922, Nr. 4, S. 379—390). 

 Graham, W. P., The absorption of the eye for ultraviolet radiation (Journ. 



of Opt. Soc. of America a. Rev. of sc. instrum. vol. 6, 1922, Nr. 5, 



S. 605-614). 

 Harrington, E. L. , A low voltage, low wattage mercury lamp (Journ. of 



Opt. Soc. of America a. Rev. of sc. instrum. vol. 7, 1923, Nr. 9, 



S. 689—692). 

 Kellner, H. , A new ocular micrometer (Journ. of Opt. Soc. of America 



a. Rev. of sc. instrum. vol. 7, 1923, Nr. 10, S. 889—891). 

 Kurtz, H. F., The dioptrometer. An apparatus for measuring the power 



of commercial lenses (Journ. of Opt. Soc. of America a. Rev. of sc. 



instrum. vol. 7, 192,3, Nr. 1, S. 103—125). 

 Moffltt, G. W. , An Instrument for the testing of prisms (Journ. of Opt. 



Soc. of America a. Rev. of sc. instrum. vol. 7, 1923, Nr. 10, S. 831 



—852). 

 Moffltt, G. W., On the characteristics of optical Systems for reading small 



mirror deflections (Journ. of Opt. Soc. of America a. Rev. of sc. in- 

 strum. vol. 6, 1922, Nr. 5, S. 494-499). 



Zeitschr. f. wiss. Mikroskopie. 40, 4. 27 



