698 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Abbe's Fluid for Homogeneous-Immersion Objectives. [Ante, p. 551.] 



Bull. Soc. Belg. Micr., VII. (1882) pp. clvi.-vii. 

 " Akakia." — Abbe's Apertometer. 



[Describes bis mode of use. Also replies to question of " Antares" as to 

 wbether homogeneous-immersion objectives are useful only where 

 apertures greater than 1 ■ 33 are required. Supra, p. 685.] 



Engl. Mech., XXXV. (1882) p. 551. 

 American Society of Microscopists. 



[Note as to the prospects of the Elmira Meeting.] 



Amer. Mori. Micr. Joum., III. (1882) pp. 135-6. 

 Bizzozeko, G. — Manuale di Microscopia cliuica. (Manual of Clinical 

 Microscopy.) 2nd ed. 



8vo, Milano, 1882, xii. and 246 pp. (44 figs, and 7 pis.). 

 Blackham, G. E. — Presidential Beport and Address (The Evolution of the 

 Modern Microscope) to the Elmira Meeting of the American Society of Micro- 

 scopists. 



[Brief abstracts with omissions. The Beport contains recommendations to 

 re-appoint the Committee on eye-pieces, and that (a propos of the 

 Griffith and Stowell prizes) the whole subject of giving prizes be taken 

 up, and the fixed policy of the Society in regard thereto be decided 

 upon and announced. " It will require careful consideration, as there 

 is much to be said both for and against the practice." The Address traces 

 the history of the Microscope from the end of the sixteenth century to 

 the present time.] 



Amer. Mori. Micr. Joum., III. (1882) pp. 170-3. 

 Bradbury, W. — The Achromatic Object-glass, VII.-X. 



Engl. Mech., XXXV. (1882) pp. 489-90, 537-8 ; 

 XXXVI. (1882) pp. 26-8, 78-80. 

 Beebisson, A. de. — See Chevalier, A. 

 Brewer, W. H. — Apparent Size of Magnified Objects. 



[Abstract of paper presented in the Sections of Histology and Microscopy 

 at the Montreal Meeting of the American Association for the Advance- 

 ment of Science. Post.'] 



Amer. Mon. Micr. Joum., III. (1882) p. 161. 

 Brittain, T. — The Beginnings of Microscopic Study. 



[Several corrections necessary. (1) Baker (and not Trembley) is credited 

 with the first demonstration of the vitality of Hydra when cut to pieces, 

 while (2) the discovery of achromatism and the manufacture of 

 achromatic lenses and the revolution which they caused in Microscopy 

 has been lost sight of, the position of the Microscope in 1830 being thus 

 dealt with :— " About 1830 the mechanism and general arrangements of 

 the materials employed began to show a great advance upon the 

 older instruments, but it was in the lenses that the chief improvements 

 were manifest, and principally in the higher powers. The lower powers, 

 composed of a single lens, remained much as before, while the 

 improvements in the higher powers were carried on to a wonderful state 

 of perfection. The provoking refraction which interfered with the 

 definition of an object when seen with a high power is now got rid 

 of, and what was obscure and doubtful before is no longer so, but 

 becomes a matter of demonstration."] 



Field Naturalist, I. (1882) pp. 80-1. 



Carpenter, W. B. — Address on the Practical and Theoretical Eesults in the 

 History of the Microscope. 



[Abstract of Address to the Section of Microscopy at the Montreal Meet- 

 ing of the A. A. A.S. Eelates mainly to the relative value of objectives 

 of small and large aperture.] 



Amer. Mon. Micr. Joum., III. (1882) pp. 161-3. 



Chevalier. A. — L'Etudiant micrographe, traite theorique et pratique du 

 Microscope et cles preparations. 3 e edition, augmentee des applications a l'etude de 

 l'anatomie, de la botanique et de l'histologie, par MM. Alph. de Bre'bisson, H. Van 



