CONTENTS. 



XV11 



PART III. 



OF CHEMICAL ANALYSIS APPLIED TO MICROSCOPICAL INVES- 

 TIGATIONOF OBTAINING CRYSTALLINE SUBSTANCES 

 OF SPECTRUM MICROSCOPIC ANALYSIS. 



OF THE ADVANTAGES OF CHEMICAL REAGENTS IN MICROSCOPICAL 



INVESTIGATION. 



Of chemical analysis in microscopical 



investigation. 



Instances of the use of reagents. 

 Preliminary operations. 

 Reaction. 

 On Filtering. 



Evaporation and drying. 

 Incineration. 

 Apparatus. 



Microscope for examining substances 

 immersed in acids and corrosive fluids. 



REAGENTS AND THEIR ACTION. 



Distilled water. 



Alcohol. 



Ether. 



Effects of alcohol and ether. 



Nitric acid. 



Sulphuric acid. 



Hydrochloric acid. 



Acetic acid. 



Chromic acid. 



Effects of acids on organic structures. 



Solution of potash. 



Solution of soda. 



Ammonia. 



Effects of alkalies on organic structures. 



Nitrate of silver. 



Nitrate of barytes. 



Oxalate of ammonia. 



Iodine solutions. 



OF APPLYING TESTS TO MINUTE QUANTITIES OF MATTER. 



Method of applying tests to substances 

 intended for microscopical examina- 

 tion. 



Bottles with capillary orifices. 



Capillary tubes with India-rubber tied 

 over the top. 



Of obtaining Crystalline Substances from the Fluids and Textures of Organisms. 



Testing for carbonate and phosphate of 

 lime, phosphate of ammonia and 

 magnesia, sulphates and chlorides. 



New method of microscopical analysis. 



Formation of crystals. 



Influence of various constituents upon 

 the crystallisation. 



Separation of crystals from animal sub- 

 stances. 



Of obtaining crystals for examination. 



Examination of crystals under the micro- 

 scope. 



Preservation of crystals as permanent 

 objects. 



Of the hardening properties of different 

 chemical solutions. 



ON SPECTRUM ANALYSIS, BY H. C. SORBY, F.R.S., &C. 



The spectrum microscope. 



Of examining objects in the spectrum 



microscope. 

 Examination of blowpipe beads, and 



solutions in cells. 



Method of measuring the position of 

 absorption bands. 



Substances giving well-marked absorp- 

 tion bands. 



PART IV. 



ON TAKING PHOTOGRAPHS OF MICROSCOPIC OBJECTS APPA- 

 RATUS ILLUMINATION CHEMICAL SOLUTIONS PRACTICAL 

 MANIPULATION PRINTING PHOTOGRAPHS FOR THE. 

 LANTERN. 



History of the application of photogra- 

 phy to the microscope. 



Illumination. 



