ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
271 
Microscopes, Microtomes, and Accessory Apparatus exhibited at 
the Tenth International Medical Congress at Berlin.* — At this 
exhibition there appears to have been a very fair show of instruments 
specially adapted for medical and pathological work. Most of the 
chief firms were represented, the greater number, of course, being 
German. Novelties were apparently conspicuous by their absence, the 
exhibitors’ claims to inspection being chiefly for thoroughness and 
effectiveness, such as a Microscope with movable stage and nose-piece 
with four objectives, and a similar instrument fitted with Mayall’s 
stage. 
Microtomes were in full force : besides the commonly used sliding 
microtomes and freezers, the less known instruments for cutting under 
water, automatic microtomes, and Altmann’s “ Support-Mikrotom,” wero 
exhibited. 
International Exhibition at Antwerp. — A circular letter has been 
issued regarding the “Exposition de Microscopie Generale et Retro- 
spective,” to be held at Antwerp in August and September next. 
The Executive Committee consists of M. Charles de Bosschere, 
President, Ur. Henri Van Heurck, Vice-President, MM. Edmond 
Grandgaignage and Gustave Royers ; M. Charles Van Geert, junr., is 
General Secretary, and M. Ferdinand Van Heurck is Secretary. 
The Honorary Presidents are Prof. Abbe, Mr. F. Crisp, and 
M. Nachet. Among others of the Honorary Committee are Prof. 
Strassburger, Dr. W. J. Behrens, Dr. E. Hartnack, Dr. Rod. Zeiss, and 
Dr. Sieg. Czapski, from Germany ; Sir Joseph D. Hooker, Mr. John 
May all, junr., Mr. JulienDeby, Dr. Maddox, and the Rev. Dr. Dallinger, 
from England ; Dr. Cox, Dr. H. Ward, and Prof. Hamilton L. Smith, 
from the United States ; Dr. J. Pelletan and Dr. P. Miquel, from 
France; Dr. Engelmann, from Holland; the Abbe de Castracane, from 
Italy ; and Dr. P. T. Cleve, from Sweden. 
The following is the “ Programme de l’Exposition de Microscopie ” : — 
Classe I. Microscopes pour toutes les recherches cour antes. — A. Micro- 
scopes a platine et a sous-platine (“ substage ”) a mouvements mecaniques. 
Modeles a tube anglais et a tube continental. Microscopes ordinaires 
pour recherches usuelles. Microscopes a bon marche pour les etudes 
elementaires. B. Microscopes speciaux. — Microscopes binoculaires. 
Microscopes pour la mineralogie et la petrograpnie. Microscopes com- 
parateurs. Microscopes speciaux pour la photographic. Microscopes 
ren verses. Microscopes de voyage. Microscopes de poche. Micro- 
scopes de demonstration. Microscopes a deux ou plusieurs corps. 
Microscopes pour musees a platine portant de nombreuses preparations 
etc. Microscopes de projection. Objectifs et oculaires. Objectifs 
achromatiques et apochromatiqnes. Objectifs a sec, a immersion dans 
l’eau, a immersion homogene, etc. Oculaires: de Huygens, de Ramsden, 
holosteriques, compensateurs, a projection. Appareils optiques pour 
l’eclairage. Condenseurs achromatiques et non-achromatiques. 
Classe II. Appareils d'eclairage. — Lampes a petrole. Lampes a gaz. 
Appareils pour la lumiere oxyhydrique. Appareils pour l’eclairage elec- 
trique a arc, a incandescence. Piles electriques speciales. 
* Central- Ztg. f. Optik u Mechanik, Qct. 15, 1890. 
