viii Contents. 



LECTURE VI. 

 CHLAMYDOMONAS. 



Formation of carbohydrates in Chlamydomonas Source of carbon Photo- 

 synthesis The pigments of the chloroplast Relation of green plants to 

 solar energy and to the rest of living nature Movements of protoplasm 



pages 41-48 



LECTURE VII. 

 BACTERIA. 



Energy set free by aerobic respiration of Chlamydomonas Catabolism and 

 anabolism Elimination of waste Contractile vacuoles Form, size and 

 motion of bacteria Reproduction Resistance to high temperatures A 

 smear-preparation pages 49-56 



LECTURE VIII. 

 BACTERIA. 



Constituents of bacteria Spontaneous generation Methods of sterilisation 

 Pure cultures Sources of food for bacteria Respiration of bacteria 

 Nitrifying and sulphur bacteria . . . . . pages 57-64 



LECTURE IX. 

 SPIROGYRA PORTICALIS. 



Circulation of nitrogen Cells of Spirogyra Microscopic reconstruction 

 Asexual and sexual reproduction Mechanism of conjugation 



pages 65-74 



LECTURE X. 



VOLVOX AUREUS. 



Unicellular and multicellular plants Structure of Volvox Its motion and 

 nutrition Asexual and sexual reproduction Differentiation of sexual 

 cells Sperms and ova Development of embryos Somatic and germ 

 cells pages 75-82 



LECTURE XI. 

 VAUCHERIA SESSILIS. 



Structure of Vaucheria A ccenocyte Division of labour Growth 

 Asexual reproduction Zoospores Sexual reproduction Antheridia 

 and oogonia pages 83-90 



LECTURE XII. 

 MUCOR. 



Appearance and structure of white mould Chemotaxis Response to gravity 

 and to light Formation ot sporangium and spores Germination of 

 spores Sexual reproduction Nutrition and respiration of Mucor 



pages 91-96 



