TABLE OF CONTENTS. 



INTRODUCTION. 



MM 



MicnoEES AND PKOTISTA ... ... ... n . ... 1 



CHAPTEU I. 



PARASITIC FUNGI AND MOULDS ... ... ... ... 9 



I. General remarks on fungi ... ... ... 9 



II. Basidiomycetes : uredinese, the rust of wheat and gra.-ses 14 



III. Ascomycetes : ergot of rye ; mould of leather and dried fruit 20 



IV. Oomycetes, muoormese, or moulds, strictly so called ; pero- 



nosporae; potato-fungus ... ... ... 27 



V. Parasiiic fungi of the vine: oidium, mildew, etc. ... 32 



VI. Habitat aud station of parasitic fungi: their destructive 



action ... ... ... ... ... 43 



VII. Parasitic fungi of insects, considered as auxiliaries to man 47 



VIII. Muscsirdin, or disease of silk worms ... ... ... 50 



IX. Parasitic fungi of the skin and mucous membrane of man 



and other animals ... ... ... ... 51 



CIIAPTKR II. 



FE17MKNTS AND ARTIFICIAL FERMENTATIONS ... ... 60 



I. Definition of fermentation... ... ... ... (JO 



II. Vegetable nature of ferments, or yeasts ... ... ... 72 



III. Ferments of wine ; alcoholic fermentation ... ... 74 



IV. Beer-yeast ... ... ... ... ... ... 78 



V. Concerning some other fermented drinks ... ... 82 



VI. Yeust of bread ... ... ... ... 84 



