DESCRIPTION OF PLATES. xiil 

 FIG. PAGE 



80. Beaded hair of sow-thistle 41 



81. Glandular hair from leaf of common tobacco 41 



82. Hair from leaf of garden chrysanthemum 41 



83. Kosette-shaped glandular hair from flower of verbena 41 



84. Stellate hairs from the hollyhock {A Itlicea rosea).. 41 



85. a. Stellate hair from leaf of lavender 41 



85, 6. Hair from leaf of garden verbena, with warty 



surface 4 j 



86. Hair from leaf of white poplar (Populus alba) . . , , 41 



87. Base of a hair on a mass of cellular tissue 41 



88, a. A sting from common nettle 42 



88, 6. Portion of a leaf of Valisneria 42 



PLATE lY. to face page 48. 



89. Palmella cruenta — gory dew 48 



90. Yeast plant 48 



91. Portions of vinegar plant , 48 



92. So-called cholera fungus obtained from the air. ... 48 



93. Bed rust of wheat ... 49 



94. Puccinia graminis — mildew 49 



95. Penicillium glaucum — common mould 49 



96. Botrytis from mouldy grape 49 



97. Fungus from mouldy bread {Mucor Mucedo) .... 49 



98. Fungus from human ear 49 



99. Fungus from leaf of bramble {Phragmidium hul- 



hosum) 49 



100. Vine blight {Oldium Tuckcri) 50 



101. Potato blight {Botrytis infestans) 50 



102. a. Pea blight {Erysiphe Pisi) 50 



h. Asci and sporidia of pea blight 50 



103. Fungus from a decayed Spanish nut 50 



