ZOOLOaY AND BOTANY, MICKOSCOPY, ETC. 531 



GuNDLACH, E . — The Examination of Objectives. ( Tn part.) 



Micr. Bulletin {Queen's), II. (1885) pp. 14-5, 

 from Amer. Journ. of Micr, for 1877. 



Heurck, H. van. — Les Perles de VAmpMpleura pellucida. (The Beads of A. 

 pellucida.) 



[Note read at Meeting of 11th March, ante, p. 380. With opinion of Prof. 

 Abbe.] 



Journ. de Microgr., IX. (1885) pp. 129-31. 



„ „ La ' Retine de la Science.' (The Eetina of Science.) 



[Keply to criticisms of M. Van Ermengem on photographs of Amphipleu7-a — 

 also quotations from S. T. Stein and T. C. White, supra, p. 528.] 



Journ. de Microgr., IX. (1885) pp. 132-4. 



[Hitchcock, E.] — Microscopical Societies. 



[Notice of intention to publish a list of U. S. A. Societies.] 



Anier. Man. Micr. Journ., VI. (1885) pp. 76 and 95. 



„ „ Microscopical Exhibitions. 



[Suggestions for improvement by showing, not a promiscuous collection, but 

 a series of objects in their proper order to illustrate certain subjects.] 



Ibid., pp. 77-8. 

 „ „ Postal Club Boxes. 



[List of preparations, with remarks.] Ibid., p. 78. 



„ „ Objectives for special use. [Post.'] Ibid., pp. 95-6. 



„ „ Electric Illumination. 



[General remarks on lamps and batteries.] Ibid., pp. 96-7. 



Holmes, 0. W. — Biography of R. W. Emerson. 



[" In the recently-published biography of Ealph Waldo Emerson, by Dr. 

 Oliver Wendell Holmes, reference is made to the diary he kept of his first 

 visit to Europe, in 1833. The biographer states (p. 63) that Emerson 

 ' visited Prof. Amici, who showed him his Microscopes magnifying (it 

 was said) two thousand diameters. Emerson hardly knew his privilege ; 

 he may Lave been the first American to look through an immersion lens 

 with the famous Modena philosopher.' "] 



Engl. Mech., XL. (1885) p. 493. 



K I N N E, C. M. — Presidential Address to the San Francisco Microscopical Society. 



Froc. San Francisco Micr. Sac, Feb. 11th, 1885. 



KoRiSTKA, T. — Norme pratiche per 1' uso del Microscopio. (Practical rules for the 

 use of the Microscope.) 8vo, Milano, 1883, 14 pp. 



Lancaster, W. J. — Microscopic. 



[" By all means have a lengthening tube or a series of lengthening tubes, if 

 you want to get out of a lens all that it is possible to get. I have used a 

 two-foot tube and have obtained charming definition with some objectives, 

 while others break down long before the two foot is reached. You must 

 take care that the whole of the tubes are quite perpendicular to the stage, 

 and that you have diaphragms about every 9 iu. of tube, otherwise you 

 will get internal reflection spoiling definition. If you place your Micro- 

 scope in a horizontal direction, and have two supports to carry the tube, 

 one, say, 10 in. from stage, and another 8 in. further on, then have a 

 3/4 in. paraffin wick-lamp as source of illumination, using thin edge of 

 flame to stage, and dispensing with mirrors, you will have many a feast 

 out of the lengthened body."] 



Engl Mech., XL. (1885) p. 437. 



Lankester, E. — Half Hours with the Microscope. 



16th ed., 142 pp. and pis., 12mo, London, 1885. 



Laurent, L. — Sur un Appareil destine a controler la courbure des surfaces 

 et la refraction des lentilles. (On an apparatus for checking the curvature 

 of surfaces and the refraction of lenses.) [Post.] 



Comptes Rendus, 0. (1885) pp. 903-5 (4 figs.), 



2 M 2 



