Xll 



CONTENTS. 



Of examining the Surface of Objects by Reflected Light. 



Bull's-eye condenser. 

 Metallic reflector. 

 Beck's parabolic reflector. 

 Lieberkuhn. 



Arrangement for examining opaque ob- 

 jects by very high powers. 

 Dark ground illumination. 

 The parabolic reflector. 



Of examining the Internal Structure of Objects by Transmitted Light. 



Gillett's condenser. 

 New condensers. 

 Examination of objects. 



Transmitted light. 

 Monochromatic illumination. 

 Diaphragm. 

 Achromatic condenser. 



OF DRAWING AND ENGRAVING OBJECTS. 



Of drawing objects. 



Camera lucida. 



Steel disk. 



Neutral tint glass reflector. 



Arranging light. 



Of making drawings which 



engraved. 

 Pencils. 



Tracing and re-tracing paper. 

 Woodblocks. 



are 



to be 



Of obtaining lithographs from microsco- 

 pical drawings. 



Drawing on transfer paper. 



Transfer paper. 



Drawing on the stone. 



Engraving on stone. 



Lithographic ink. 



Of representing peculiarities of texture. 



On the importance of observers delineat- 

 ing their own work. 



ON MEASURING OBJECTS AND ASCERTAINING THE MAGNIFYING POWER 



OF OBJECT GLASSES. 



To ascertain the diameter of an object. 

 Standards of measurement. 

 Conversion of foreign standards of 

 measurement. 



The cobweb micrometer. 

 Jackson's eye-piece micrometer. 

 Stage micrometers. 

 Test objects. 



Simple method of measuring. 

 On ascertaining the magnifying power of 

 object-glasses. 



Of finding the same Spot in a Specimen. 

 Of making the position of an object. | Mr. Bridgman's finder. 



INSTRUMENTS AND APPARATUS REQUIRED IN GENERAL MICROSCOPICAL 



RESEARCH. 



Spirit lamps. 

 Wire retort stand. 

 Tripods. 



For cutting Thin Sections of Tissues. 



Scalpels. Scissars. 



Double-edged knife. 



Section knife of a new form. 



Double-bladed or Valentin's knife. 



Razor. 



Brass plate. 

 Water bath. 



Needles. 

 Forceps. 

 Wooden forceps. 



Glass Slides, Thin Glass, Watch Glasses, Glass Shades. 



Plate-glass slides. 

 Thin glass. 



Gold size. 



Sealing wax varnish. 

 Solution of shell-lac. 

 Bell's cement. 

 Brunswick black. 



Watch glasses. 

 Glass shades. 



Cements. 



Marine glue. 



Cement for attaching gutta percha or 



India-rubber to the glass slides. 

 Canada balsam. 



