974 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Dallinger, W. H. — Eesearches on the Origin and Life-histories of the least and 

 lowest living: things. 

 [The full lecture — abstract, ante, p. 721.] 



Nature, XXX. (1881) pp. 619-22 (1 fig.), 645-8. 

 „ „ See American Society of Microscopists. 



Davis, G. E. — To our Eeaders. 



[Announcing the suspension of the ' Microscopical News.'] 



Micr. Neu-s, IV. (1884) pp. 267-8. 

 Enqelmann, T. W. — Kechercbes sur les relations quantitatives entre 1' absorp- 

 tion de la lumiere et I'assimilation dans les cellules ve'ge'tales. (Eesearches on 

 the quantitative relations between the absorption of light and assimilation in 

 plant cells.) 



[Version in French of German paper noted ante, p. 301. Describes the 

 " microspectral photometer, an apparatus for quantitative microspectral 

 analysis."] [^PostJ] 



Arch. Neerl Sci. Exact, and Nat., XIX. (1884) pp. 186-206. 

 F. K. M. S. — The Diatomescope and Mr. E. M. Nelson — An oblique illuminator 

 for the Microscope wanted. [Supra, p. 961.] 



Lngl. Mech., XL. (1884) pp. 198-9, 263-4 (1 fig ). 

 FiNDON, C. J. B.— The Diatomescope. Engl. Meek, XL. (1884) p. 264. 



Fischer, G.— See Gue'bhaid, A. 



" Grey Beard." — The Annual Proceedings [of the American Society of Micro- 

 scopists]. 



[Deprecating complaints of delay in publication.] 



The Microscope, IV. (1884) p. 223. 

 Guebhaed's (A.) Artikel Ueber das Vergrosserungs-vermogen der optischen 

 Instnimente, Anhaug zu, aus franzosischen Quellen zuzammengestellt voii 

 G. Fiseher. (Appendix to Guebhard's article, a/ti^, p. 810, on the magnifying 

 power of Optical Instruments. Compiled from French sources by G. Fischer.) 

 {Post.-] 



Central-Ztfj. f. Optik u. Mech., V. (1884) pp. 217-20 (3 figs.). 

 GuNDLACH, E.— Improvement in Objectives. \_Post.'] 



Amer. Man. Micr. Journ., V. (1884) pp. 168-70. 

 Haycrapt, J. B.— A Model Lens for use in Class Demonstrations. 



Nature, XXX. (1884) p. 543 (1 fig.). 

 Hitchcock, E. — Eecent Studies on the theory of the Microscope, and their prac- 

 tical results as regards the use of the Microscope in scientific investigations, 



Amer. Mon. Micr. Journ., V. (1884) pp. 191-6. 

 „ „ The Electric Light for the Microscope. 



[Mr. TValmsley's exhibit at the Philadelphia Meeting of the Amer. Assoc. 

 Adv. Sci., &c.] 



Amer. Mon. Micr. Journ., V. (1884) p. 199. 

 HoFMEiSTER, V. — See Siedamgrotzky, O. 



James, F. L. — Instructions for making a neutral-tint Camera lucida. 

 [Eound cover-glass and pill-box.] 



Amer. Mon. Micr. Journ., V. (1884) p. 179, from ' National Druggist.' 

 JuLiEN, A. A. — An Immersion Apparatus for the determination of the tem- 

 perature of the critical point in the fluid cavities of minerals. [Post.'] 



Amer. Mon. Micr. Journ., V. (1884) pp. 189-90. 

 Science, IV. (1884) pp. 342-3. 

 KiNGSLEY, J. S.— Journal of E. Microscopical Society. 



Science Record, II. (1884) p. 187. 

 " )) [Answer to question "Which is the best Microscope?" — the 



answer being Hartnack or Zeiss if price is taken into consideration. " Almost 

 every American student who goes to Europe to study biology gets rid of his 

 American stand, and comes back armed with instruments of one of the two 

 makers named."] 



Scie7ice Record, II. (1884) p. 210. 



