Table of Contents. 



PrEi'ace 



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APTF,K I Plants in their Societies I 



AFTER II Plant Wanderings and Migrations i8 



ATTER III Slime-nionlds and Ijlne-green Algae 26 



ATTER IV Bright-green Algae t,^ 



ARTER V Brown Algae and Red Algae 39 



AFTER VI The Lower Sorts of Fnngi 43 



AFTER VII Smuts and Rusts 48 



AFTER VIII Trembling Fungi, Club-fungi, Shelf-fungi and 



Mushrooms 55 



AFTER IX Carrion-fungi and Puf¥-balls 66 



AFTER X Yeasts, ^^lorels, Cup-fungi and Truffles 72 



AFTER XI Blights, Black-fungi and Root-fungi 80 



AFTER XII Lichens and Beetle-fungi 91 



AFTER XIII Various Kinds of Bacteria lOi 



AFTER XIV ]\Iosses and Liverworts as Links between the 



Algae and Higher Plants 122 



AFTER XV Liverworts of Minnesota 132 



AFTER XVI Mosses of Minn^esota 144 



AFTER XVI I Christmas-green Plants or Club-mosses 156 



AFTER XVIII Ferns and Water-ferns 161 



AFTER XIX Scouring-rushes and Horse-tails 175 



AFTER XX What Seeds Are and how they are Produced. . . 180 



AFTER XXI Ground-hemlocks and Various Pines 185 



AFTER XXII From Cat-tails to Eel-grasses I97 



AFTER XXIII Grasses and Sedges 204 



