406 Neue Literatur. XX VIII, 3. 



c. Okulare. 



Nelson, E. M., On soine 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. R. Microsc. Soc. 1911, pt. 5, p. 693). 



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

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



Leitz' Katalog 43 G, p. 9). 



e. Verschiedenes. 



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

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

 1911, p. 671—680). 



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

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

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



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

 (Arcb. 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 micrograph: a preliminary report. 

 An instrument that records tbe 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 struetures discovered with ;i 

 new Zeiss apoebromat (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 tbe evolution of tbe modern micro- 

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



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

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



