406 Neue Literatur. XXVIII, 3. 



c. Okulare. 



Nelson, E. M., On some new objectives and eye-pieces by R. Winkel, 

 of Göttingen (Journ. R. Microsc. Soc. 1911, pt. 4, p. 451). 



Allan's variable eye-piece (Journ. E. Microsc. Soc. 1911, pt. .5, p. 693). 



Winkel's eye-piece with screw micrometer and graduated glass diaphragm 

 (Journ. R. Microsc. Soc. 1911, pt. 4, p. 536; vgl. R. Winkels Katalog 

 1911, p. 14). 



d. Beleuchtungsapparate und Mikrospektroskop. 



(Keeley, F, J.,) Micro-spectroscopic Observation (Journ. R. Microsc. Soc. 



1911, pt. 4, p. 539; vgl. Proc. Acad. Nat. Sei. Philadelphia 1911, 



p. 106-116). 

 Emry-Robert's microscope lamp (Journ. R. Microsc. Soc. 1911, pt. 5, p. 698). 

 Leitz Lihput arc-lamp (Journ. R. Microsc. Soc. 1911, pt. 5, p. 699; vgl. 



Leitz' Katalog 43 (t, p. 9). 



e. Verschiedenes. 



(Bell, L.,) Opacity of certain glasses for the ultra-violet (Journ. R. Microsc. 



Soc. 1911, pt. 5, p. 700; vgl. Proc. Amer. Acad. Arts and Sei. vol. XLYI, 



1911, p. 671—680). 

 Brocher, F., et Doret, F., Le travail au microscope et raccommodation 



(Rev. medicale de la Suisse romande Annee XXXI, no. 2; vgl. diese 



Zeitschr. Bd. XXVIII, 1911, p. 365). 

 Brecher, F., et Doret, F., Le travail au microscope et l'accommodation 



(Arch. des Sciences Physiques et Naturelles Annee XXXI, Janvier 



1911; vgl. diese Zeitschr. Bd. XXVIII, 1911, p. 365). 

 Crehore, A. C, a. Meara, F. S., The raicrograph: a preliminary report. 



An instrument that records the microscopic movements of a diaphragm 



by means of light-interference (Journ. Amer. med. Assoc. voL LVI, 



no. 21, p. 1549—1552 w. 6 figg.). 

 (Merlin, A. A. C. E.,) Some new diatomic structures discovered with a 



new Zeiss apochromat (Journ. R. Microsc. Soc. 1911, pt. 5, p. 700; 



vgl. Journ. Quekett Micr. Club 1911, p. 199—202). 

 Nelson, E. M., Adam's „Variable" and the evolution of the modern micro- 

 scope (Journ. R. Microsc. Soc. 1911, pt. 2, p. 178 — 184). 

 Old microscope by J. Simons : presented by members of the Council (Journ. 



R. Microsc. Soc. 1911, pt. 4, p. 528). 



