Preface. 



The present 33 rd Edition of our Catalogue relating to Microscopes and 

 Microscopical Accessories exhibits some modifications as compared with the 32. nd 

 Edition, which appeared in 1902, occasioned, mainly, by the introduction of several 

 new forms of Stands. The construction of Stands III and IV regarding whose 

 arrangements we have already given full particulars in special prospectuses - 

 has resulted in conferring certain advantages, rendered possible by limiting the 

 number of the types, and by greater simplification in the mechanical equipment. 

 Further, we have manufactured quite a simple Stand for laboratory use, more in 

 accordance with present requirements of microscopical technic than our earlier 

 small Stands. A detailed prospectus relating to this new Stand V has already 

 been published. 



Ill the majority of the achromatic objectives, owing to progress contin- 

 ually being made in division of labour with the manufacture of these systems, 

 we are enabled thereby to effect important reductions in price. For details 

 we would refer to the accompanying circular. 



The list of the Magnifiers, the Dissecting Stands and Lens-Holders has 

 been omitted in the present edition, since a special price list containing them will 

 appear shortly. 



The general price list appended to the last edition is in the present omit- 

 ted, the entry of the prices against each item being considered as sufficient. 



New apparatus or changes in construction appearing for the first time in 

 this Catalogue are as follows: 



Stand III, pp. 48, 49; Stand III M, pp. 50, 51; Stand IV, pp. 52, 53; Stand V, 

 pp. 45, 55 ; Corneal Microscope with GrULLSTRAND's Appliance for lateral illumin- 

 ation, p. 65 ; Stand XI (monocular image-erecting prism Microscope), pp. 66, 67 ; 

 Micro-spectro-photometer with grating, p. 88. 



The two important new constructions in the sphere of microscopy, Appliances 

 for the investigation of Ultra-microscopical Particles by SlEDENTOPF and ZsiGMONDY 

 and the Micro-photographical Appliances for Ultra-violet Light by KCtHLER are 

 not included in the present Catalogue. Regarding this apparatus we must refer 

 to the detailed descriptions and price lists published by us during the course of 

 the past year. 



