148 SUMMARY OF OUREENT RESEARCHES RELATING TO 



Stowell, 0. H. and L. R. — A new Microscopical Journal. 



[' Science Eecord,'] The Microscope, III. (1883) p. 223. 



„ , , Fasoldt's Micrometers. 



[Micrometer which showed Newton's rings in a beautiful manner; also 

 a newly ruled micrometer, each alternate line being ruled longer, so that 

 the end of each band is half the value of the band proper ; that is, if the 

 baud was in the field ruled 50,000 to the inch, then the end of that band 

 would show 25,000 to the inch. Therefore, as Mr. Fasoldt says, " one 

 can easily judge if there is any diffraction."] 



The Microscope, III. (1883) p. 239, 

 „ C. H. — A Microscopic Inflation. 



[Facetious rejoinder to Dr. 0. W. Holmes' statement, supra, as to the size of 

 an enlarged Harvard student.] 



The Microscope, IV. (1883) pp. 10-11. 

 „ See ToUes, R. B. 

 T. T.— Microscopic Test Objects. 



[Points out the error in E. M. Nelson's suggestion, supra, p. 139, that ob- 

 jectives should not be tested by oblique light.] 



Engl. Mech., XXXVIII. (1884) p. 386. 

 „ Relation of Aperture to Power in Microscope Object-glasses. 



[Reply to E. M. Nelson, supra, showing the wide difference between his 

 figures and those of Prof. Abbe.] 



Engl. Mech., XXXVIII. (1884) p. 410. 

 Tetlow, D.— Microscope. U.S.A. Patent, No. 287978, of 24th August, 1883. 



ToLLES, R. B., Death of. Boston Evening Transcript, 28th Nov., 1883. 



Engl. Mech., XXXVIII. (1883) p. 336. 

 Science, III. (1883) p. 726. 

 [" Mr. Tolles has been long known for the construction of Microscopes and 

 Telescopes of unusually short focus. He made the highest-power Micro- 

 scope produced in America " !] Athenxum, 1883, p. 819. 



Micr. News, IV. (1884) p. 25. 

 The Microscope, IV. (1884) pp. 3-4 (T. Barlow) ; pp. 4-5 (0. H. Stowell) ; 



pp. 5-6 (G-. E. Blackham). 

 Amer. Mon. Micr. Journ., V. (1884) pp. 10-11 (S. Wells and R. Hitchcock). 



Micr. Bull., X. (1883) pp. 5-6. 



Science Eecord, II. (1883) p. 43. 



„ „ See Detmers, H. J. 



ToKNEBOHM, A. E. — Ueber eiue Vorrichtung an Mikroskoptischen zur allgemein 



giiltigen Fixirung eines bestimmten Punktes in einem Praparat. (On an 



arrangement of the microscope-stage for the universal fixing of a given point 



in a preparation.) IPost.'] 



Neues Jahrh. f. 3Iineral., 1883, I., pp. 195-6. 

 Trelease, W. — See Poulsen, V. A. 

 VoRCE, 0. M.— A Memoir of W. B. Rezner. 



Proc. Amer. Soc. Micr., 6th Ann. Meeting, pp. 242-5. 

 Walmsley, W. H. — Photo-micrography with dry-plates and lamplight. 

 [Vol. III. (1883) p. 556.] 



Froc. Amer. Soc. Micr., 6th Ann. Meeting, pp. 59-64 (1 fig.). 

 Ward, E. H. — See Micrometer Scale. 

 Wells, S.— See Tolles, R. B. 

 Whiting, Sarah F. — College Microscopical Societies. 



[Advantages of such societies, and how they can be made a success.] 



Froc. Amer. Soc. Micr., 6th Ann. Meeting, pp. 27-31. 

 Discussion, pp. 225-7. 

 Wright, L. — Lantern and Limelight matters. 



[Comparative optical conditions of wick'd lamps and the limelight — 

 Condensers— Lime-j ets. ] 



Engl. Mech., XXXVIIL (1883) pp. 343-4 (2 figs.). 

 Zengee, K. W.— See Fischer, G. 



