CONTENTS. 



PAGB 



I. Preliminary Chapter i 



Point of View, i; Equipment, a; Use of the 

 Laboratory (Hand Lenses and Compound 

 Microscope, 4; Illustrative Material, 5 ; Draw- 

 ings, Notes, etc., 8; Reference Reading, 10; 

 Collection and Preservation of Material, 13; 

 Independent Work, 14). 



II. Green Slime (Pleurococcus viridis) 16 



III. Nostoc 21 



IV. .Oscillaria 24 



V. Ulothrix 29 



VI. Cladophora 34 



VII. Spirogyra 38 



VIII. Vaucheria sessilis 46 



IX. Coleochaete 51 



X. Common Black Mold (Mucor stolonifer) 55 



XI. Toadstool (Coprinus sp. or Agaricus sp.) 59 



XII. White Rust (Albugo Candida or A. Portulaca). . . 62 



XIII. Mildew (Microsphara Friesii, or M. Querci) 69 



XIV. A Lichen 75 



XV. Liverwort (Riccid) 80 



XVI. Marchantia polymorpha 85 



XVII. A Leafy Liverwort (Porelld) 92 



XVIII. Anthoceros 95 



XIX. A Moss-plant (Atrichum undulatum or Funaria 



hygrometricd) 99 



XX. The Bracken Fern (Pteris aquilind) 107 



XXI. Scouring-rush, or Horsetail (Equisetum arvense).. 117 



XXII. Club-moss (Selaginella sp.) 122 



XXIII. Pine (Pinus Austriaca or P. Laricio) 129 



vii 



