1880.] 



MICEOSCOPICAL JOUKNAL. 



1T5 



none attracted so much attention as 

 did liis new "International Binocu- 

 lar," by Beck. Whatever a person's 

 opinion may be of the utility of 

 such large and heavy stands, it can- 

 not be denied that Beck's " Inter- 

 national " is a stand that, so far as 

 any possible requirements of the 

 microscopist are concerned, leaves 

 nothino; to be desired. Anything 

 that a microscope is capable oi show- 

 ing can be shown by the " Interna- 

 tional," and we cannot conceive of 

 any useful addition that could be 

 made to the stand in its present 

 condition. Besides this large instru- 

 ment, Mr. Walmsley also exhibited 

 the " Large best " and the " Small 

 best," the "National," the "Econo- 

 mic " and others ; and with other 

 apparatus a freezing microtome. 



Mr. G. S. Woolman, of 116 Ful- 

 ton St., New York, had on exhibition 

 during the meetings a tine assort- 

 ment of microscopes, accessory ap- 

 paratus and objects, that attracted 

 much attention from the microsco- 

 pists present. A Beck's " Smaller 

 Grand," two " ISTationals," a Crouch 

 " Histological " and a Zentmayer 

 large binocular, were prominent 

 among them. The new "Acme" 

 was of special interest, embodying 

 as it does, some of the latest and 

 most desirable features of a micro- 

 scope. It is a well-made stand, com- 

 pact and solid, without having great 

 weight, and its moderate price makes 

 it most desirable. Using one of 

 Spencer's new^inch of 116° Balsam 

 Angle, Mr. Woolman resolves the 

 A. pellucida. Many of the objects 

 shown were quite interesting. A 

 slide of gold crystals prepared by 

 Dr. Watts is of such rare beauty 

 that it is worthy of special mention. 

 Mr. Woolman also exhibited a new 

 cabinet to hold twenty-four objects, 

 all lying flat, and arranged so that 

 any object could readily be selected 

 without loss of time. The cabinet 



was of black-walnut, well but 

 plainly iinished, and of low^ price. 

 A student's set of Spencer's lenses, 

 and their new i-inch were notice- 

 able in the collection of objectives. 



Mr. L. E. Sexton, of Rochester, 

 N. Y., exhibited a line of Gund- 

 lach's physicians' microscopes, and 

 a varied assortment of objectives 

 illustrating the qualities of each of 

 the five classes that are now made 

 by that optician. Among the lat- 

 ter were several new attractive and 

 interesting specimens of work, the 

 most remarkable of which was a 

 homogeneous immersion one-eighth 

 of over 130° balsam-angle, and of 

 corresponding good performance. 



Next to this in interest, was a 

 dry- working one-half inch of 110° 

 air-angle, of such ingenious con- 

 struction, that it may be used on 

 opaque objects, although possessing 

 enough resolving power to easily 

 show the markings on P. arigul- 

 atum by central light. Several 

 other objectives of the same class 

 and equal excellence, especially the 

 quarters and sixths, gave evidence 

 of great improvement in this grade 

 of objectives during the past year, 

 which w^as more than corroborated 

 by the performance of the glycerin 

 immersion one-tenth of the same 

 class. A full line of the ne\v di- 

 viding objectives showed that Mr. 

 Gundlach has made in these a 

 happy combination of two excel- 

 lent objectives at the j)rice of one. 

 Another novelty was a three- 

 quarters of wide angle, and won- 

 derful working distance. 



In his physicians' stands were 

 noted several additional conveni- 

 ences not possessed by these instru- 

 ments a year ago — notably the new 

 diaphragm and the sliding adjust- 

 ments — as well as improvements in 

 graceful proportion and workman- 

 ship. 



Mr. Stodder did not make any 



