CONTENTS. 



LECTURE I. 

 THE MICROSCOPE. 



Names of the parts of a microscope Microscopic preparation Cells of 

 epidermis of Tradescantia virginiana Uses of adjustments, condenser 

 and diaphragm Change of objectives Optical sections Care of 

 microscope . . . . . *. pages 1-8 



LECTURE II. 



STRUCTURE OF A CELL. 



Physical and chemical nature of the cell-wall Physical properties of proto- 

 plasm Diffusion Permeable and semi-permeable partitions Osmotic 

 pressure Turgor Plasmolysis Coagulation Chemical nature of the 

 constituents of protoplasm pages 9-18 



LECTURE III. 



SACCHAROMYCES CEREVISEAE. 



Crystalloidal and colloidal states Size and surface of colloidal particles 

 Sols and gels The yeast plant A single cell Growth and reproduc- 

 tion Temperature limits Assimilation . . . pages 19-27 



LECTURE IV. 



SA CCHAROMYCES CERE VISEAE. 



Changes facilitated by enzymes Nature of enzyme action Inversion 

 Energy needed for assimilation supplied by combustion Fermentation, 

 the incomplete combustion of carbohydrates Anaerobic respiration 

 Size of yeast-cells The ghost-micrometer . . . pages 28-34 



LECTURE V. 

 CHLAMYDOMONAS. 



Size and motion of the cell Its structure Stimulus and response Spon- 

 taneity Sexual and asexual reproduction Gametes and spores 



pages 35-40 



