142 SUMMARY OF CURRENT RESEARCHES RELATING TO 



[HiTCUcocK, K.] — Some general remarks. 



Aiticr. Mon. Micr. Journ., V. (1884) pp. 212-3. 



„ „ Choosing objectives. IPost.'] Ibid., p. 214. 



„ „ Microscopical Societies. lPost.'\ Ibid., pp. 215-7, 237-8. 



„ „ ScliriSricr's Camera Lucida. 



[" While commending this instrument in the highest terms, it is hut fair to 

 say that owing to tlie considerable distance tho light has to travel through 

 it from the eye-lens, it can only be used with oculars of low power, having 

 a long focus back of the eye-lens. Otherwise the rays come to a focus 

 within the prism or at hast do not reach the point K far enough above 

 the prism to aflbrd a sufficiently large fifld of view." " No such ol>jection 

 applies to the camera lucida of Gruuow, which is the only one comparable 

 with it.''] 



IbkL, p. 221 (1 fig.). 



„ „ Postal Club Boxes. 



[Kemarbs on J. Kruttschnitt's theory of the fertilization of the ovule.] 



Ibid., pp. 234-5. 



„ „ Concerning Microscopes. 



[Criticism of J. S. Kingsley's article, cf. this Journal, IV. p. 975. His list 

 of names is too small and far from comprehensive.] 



Ibid., pp. 236-7. 



„ „ Discontinuance of the ' Microscopical News.' Ibid., p. 239. 



\_Hitchcoch, /?.] — Electric light for the Microscope. 



[Abstract of S. T. Stein's paper, supra, p. 466.] Ibid., pp. 222-4 (4 figs.). 



" Invicta." — Microscope. 



[Reply to inquiry for infernal diameter and standard length of a full-sized 

 English Microscope body-tube, and recommendation not to use a 10 in. 

 tube. " A very well known and respected maker .... most kindly and 

 liberally gave me advice that was simply invaluable. . . . ' Don't make 

 your tube more than 8i in. lung, and shorter than that preferably.' "] 



Engl. 3fcch., XL. (1885) p. 392. 



Jannettaz, E. — Les Roches, description et analyse au Microscope de leurs 

 elements mine'ralogiques et de leur structure. (Rocks, descri{)tion and micro- 

 scopical analysis of their mineralogical elements and structure.) 

 [Contains a section on Polarizing Microscopes, pp. 112-7 (2 figs.)] 



2nd ed., xii. and 480 pp., 215 figs, and 2 majjs, 8vo, Paris, 1884. 



JosErH, R. E. — Incandescent Lamps for Surgical and Microscopical purposes. 

 [Quotes Mr. Steam's paper, III. (1888) p. 29.] 



Tram, and Proc. Roy. Soc. Victoria, XX. (1884) pp. 84-7. 



K. — The Phenomenon of Multiple Image. 



[Has observed multiple images in diatoms, Triccratium favus. This 

 phenomenon is well known in England. See this Journal, I. (1881) p. 555.] 



The Microscope, IV. (1884; p. 272. 



L., R. — Paul Miiller's Insectenfanger mit Lupe. (Paul Miiller's insect-catcher 

 with lens.) 



[See this Journal, IV. (1884) p. 632, and post."] 



Entomol. Nachr., X. (1884) p. 52. 



Landolt, T. — Natriumlampe fUr Polarisationsapparate. (Sodium lamp for 

 polarisation apparatus.) 



Zeitschr.f. Instrumentenk., IV. (1884) p. 390 (1 fig.). 



Latham, V. A. — The Microscope and how to use it. I. 



[Gives " some of the best methods for the preparation and mounting of 

 microscopic objects," preceded by brief remarks on the Microscope and 

 accessories.] 



Journ. of Microscopy., IV. (1885) pp. 22-34. 



