530 SUMMARY OF CURRENT RESEARCHES RELATING TO 



♦' A Binocular M.D."— See Monocular v. Biuocular. 

 Abbe Condenser. 



[Zentmnyer's simplified mounting. Post.'] 



Aincr. Mon. Micr. Jown., VI. (1885) p. 84 (1 fig.). 

 Abbe, E. — See Heurck, H. van. 

 B.So. — See Mononular v. Binocular. 

 B A N K s, C. W. — Slides of arranged and isolated Diatoms. 



[" By J. C .Kinubock of Vienna, who probably has no livinp; equal in the pro- 

 duction of these marvels of exquisite taste and manipulative skill. With 

 marvellous patience, hundrc<ls of diatoms are arranged on a glass slide in 

 patterns of wonderful beauty. In the slides exhibited Mr. Rinnbock lias 

 introduced a novel feature by combining in the same pattern witli tho 

 diatoms butterfly scales of various hues, and also the plates of Holotkuridi. 

 By a bappy combination of these varied forms and by taking advantage of 

 the brilliant chromatic eftVcts produced by many diatoms when viewed 

 with low powers, Mr. Rinnbock has i)roduced slides which, under the 

 Microscope, blaze like a kaleidoscopic arrangement of resplendent gems."] 

 Proc. San Francisco Micr. Soc., Feb. 25th, 1885. 

 B A T E s, C. P.— Warm Stage. [Posf] 



Proc. San Francisco Micr. Soc., March 25th, 1885. 

 Breckenfeld, A. H. — Graduated Glass Modifier. 



[Consists of a disk revolving upon an adapter under the stage. It is 

 "flashed" from clear glass to dark blue, and one-half of its surface being 

 lightly ground, any desired tint of fitld may be obtained, from white to 

 deep blue, either transparent or translucent, by merely revolving tho 

 disk.] Proc. San Francisco Micr. Soc, March 11th, 1885. 



See Engl. MecL, XLI. (1885) p. 187. 

 Cox, C. F. — " What is a Microscopist 1" 



[Detailed protest against tlio remarks under this title, ante p. 33.3, " on tlie 

 ground that instead of keeping to a true estimate of the scientific spirit, 

 tliey set up narrow and exclusive standards, and are essentially and 

 offensively personal," and editorial rejoinder.] 



Science, V. (1885) pp. 205-6, 209-10, 

 D'Agen, F. — See Monocnlar v. Binocular. 

 Enal. — See ISIonocular v. Bin 'cular. 

 ExNER, S. — Ein Mikro-Eefiactometer. (A Jlicro-rcfractometer.) [Post] 



Arch.f. Mikr. And., XXV. (188,5) pp. 97-112 (1 pi. and 2 figs.). 



Fabre-Domergue, p. — Note sur une nouvelle platine mobile et sur I'emploi 



de " finders " comparables pour faciliter les relations des micrographes entre 



eux. (Note on a new movable stage and on tlie employment of finders to 



facilitate the intercommunication of microscopists.) 



[Describes the Maltwood finder, also suggests the following as a very simple 

 and inexpensive movable stage which is mostly wanting in French 

 Microscopes, and without whicli the IMnltwood finder cannot be used: — 

 Two glass plates 130 mm. by 35 mm. have a central aperture 25 mm. 

 in diameter. Their two ends are cemented to two strips of glass 35 mm. 

 ^ by 5 mm., leaving between them a space equal to the thickness of the 



strips, about 2 mm. On the left of the top plate is cemented an elbow 

 piece for the slide to butt against. The sj)ace between the two plates 

 serves for the springs whicli by a simple pressure immobilize the 

 apparatus.] 



Bull. Soc. D'Hist. Nat. Toulouse, XVIII. (1884) pp. 148-51 (1 fig.). 

 FOTLIS. 



[" Demonstration of the circulation in the web of a frog's foot and of some 

 botanical test objects by means of the oxyhydrogen light. The light, 

 transmitted through a powerful condenser, passed through an ordinary 

 INlicroscope lens, and was thrown upon a large plate of ground glass at a 

 distance of about 25 feet. The image of the object demonstrated could 

 be focused on this plate with great exactitude, the definition even with 

 high powers being excellent, and the general effect strikingly satisfac- 

 tory."] 



Enjl. Mech., XLI. (1885) p. 255. 



